This is a list of elevator fixtures produced by Dewhurst plc, a company that produces and manufactures braille and tactile push buttons for any both major elevator companies and generic elevator companies.
1930s to 1960s
These buttons are round, and the color depends on the button. The call and floor buttons are black. The call buttons sometimes have a light above them that lights up when the button is pressed. The floor buttons do not light up. The stop button is red, the door open button is green, and the alarm button is white. These fixtures were mostly used in old British-made elevators such as Bennie Lifts, Evans Lifts, Marryat & Scott, Etchells, Congdon & Muir, and fewer old generic elevator companies.
1970s to 1990s
The US81 Original pushbuttons were launched in 1971 and were commonly used until in the late 1990s. These buttons are square stainless steel with a chrome frame, and a small engraved number on the bottom left of the button's corner. Later design had a small red lamp on the top right and illuminating halo. They can just be illuminating floor indicators and not pressable for some reasons. The design of these buttons were later adapted in the current US90 series buttons.
Black US81 Compact
These buttons have black paint with non-painted braille and tactile (for EN81-70 standard), and red illuminating lamp (but both not on the tactile legend). Also, these button plates are possible to be mounted on a later Compact 2 chassis and the Compact series replaced from this series later but Dewhurst still offer these types of surface for elevator companies.
These are stainless steel barrel shaped buttons with or without illuminating red halo. They can just be illuminating floor indicators and not pressable for some reasons. These buttons were commonly used in some older Schindler, Keighley (in the United Kingdom), and few other elevators.
When the US81 and US89 series buttons were launched in 1971, the same types of keyswitches were also provided for the panels to operate the elevators, such as for access to locked floors, turning on/off the lights, operating the fire service mode etc.
US85 and US85 Braille
These are large square buttons that looks just like the Jumbo Compact series in the 2000s. Button faceplates were either stainless steel hairline (without braille and tactile) or stainless steel with a black paint, braille and tactile legends (for EN81-70 standard) just like a larger version of the US81 series buttons. They have red or sometimes green illuminating halo. These buttons were widely used in older elevators used in London Underground stations and some older Hong Kong MTR stations in the late 1990s. Dewhurst continued on making the US85 pushbuttons until late-2016.
These are protruding round buttons with a small red dot lamp in the middle. They also have braille plate installed next to them. Dewhurst still makes these buttons.
Hidden Legends indicators
Hidden Legends indicators were various kinds of illuminating lamps that displays various kinds of symbols or words to indicate a specified elevator status (for example: out of service lamp, overload warning lamp, etc.). The words could also be shown in different languages like Chinese and Hebrew. Hidden Legends Indicators in the 1970s-1990s only had UL200 and US81 series.
The UL200 indicators were set of small vandal-resistant numeral indicators with bright illuminated legends. It belongs to one of the two series products of Hidden Legends Indicators. UL200 indicators are quite commonly found in older elevators in old public housing blocks in Hong Kong.
These were LED floor counter which displays text and scrolling arrows. These indicators were widely used in elevators installed in public housing blocks in Singapore which were built by the Housing and Development Board (HDB) since the 1990s, and they are still in used for new installations, mostly under the Lift Upgrading Programme.
2000s to present
The larger "Compact" series buttons range were launched in 1999. It replaced the US81 series buttons (the chassis is called "Compact") that has been produced over 20 years.
These models of buttons are in standard Compact 2, Compact 2 Micro, Compact 3 and Compact 3 Profile. They are using same button plate for their corresponding shape that can fit in. For example, one can replace the button plate when updating the floor numbers or just want to indicate the main entrance floor. These models of buttons also can act as indicators just like US90. Only the same size button plates can backward compatible to older Compact chassis.
Some types of these button surfaces also came with Kone symbol. This mean some buttons are following Kone's standards.
The Compact series comes in many different types and series, they are:
- US91: Round metal buttons with only an illuminating number or symbol.
- US91-15: Similar style as the US91 series but features an illuminating tactile and halo, and non-illuminating braille.
- US91-EN: Round black anodized buttons molded with opal polycarbonate (for EN81-70 standard). They only have illuminating tactile.
- US91-BB: Round metal vandal resistant with a yellow/brass concave surface in the middle and an illuminating halo.
- US92: Round buttons with black halo and pressel illumination. An optional design is that any legend can be engraved on the pressel.
- US95: Similar style as US91-15, but features an illuminating tactile and braille.
- US95-AB: Round buttons that has antibacterial protection, tactile and halo illumination, and opal polycarbonate-molded white plastic pressel.
- US95-EN: Similar style as the US91-EN, but features an illuminating tactile and braille.
- US95 Plus: Large version of the US95 pushbuttons but features a thinner illuminating halo, tactile and braille.
- US95-EN Plus: Large version of the US95-EN pushbuttons but features a thinner illuminating halo, tactile and braille.
- US100: Round metal, vandal resistant style buttons with a lamp in the middle.
- US90: Square metal buttons with only an illuminating number or symbol.
- US90-15: Square buttons with illuminating legend and halo, and non-illuminating braille.
- US90-EN: Square black anodized buttons molded with opal polycarbonate (for EN81-70 standard). They only have illuminating tactile.
- US94: Square buttons with black halo and pressel illumination. An optional design is that any legend can be engraved on the pressel.
- US96: Similar style as US95, but features an illuminating tactile and braille. A square version of US95.
- US96-EN: Similar style as the US91-EN, but features an illuminating tactile and braille.
The barrel type buttons is the only barrel-shaped button type in the Compact series family, and has only available in one series, the US89, which is a revamped version of the original 1971 Dewhurst US89 button series. These buttons have either flat or raised illuminating legend, and do not have braille.
These buttons are basically like the large version of Compac 2, 2 Micro, 3 and 3 Profile buttons. They are normally used in low rise but high traffic environments like airports, transportation hubs, shopping centers and hospitals. Due to their big size, they can also be operated by an elbow or even knee. A New Jumbo alarm button can also be installed at the bottom of the car operating panel so that it can be pressed using foot (for accessibility reason).
- JUS90: Stainless steel hairline with only illuminating halo and number (similar to US90)
- JUS90-30: Stainless steel hairline with braille and both illuminating tactile and halo (similar to US90-15)
- JUS96-30: Stainless steel hairline with illuminating halo, braille and tactile, similar to US96.
- JUS90-30EN: Black anodised with illuminating halo and tactile (similar to US90-EN)
- JUS96-30EN: Black anodised with illuminating braille, tactile and halo, similar to US96-EN.
- JUS91: Stainless steel hairline with only illuminating halo and tactile, similar to US91.
- JUS91-30: Stainless steel hairline with braille and both illuminating tactile and halo, similar to US91-15.
- JUS95-30: Stainless steel hairline with illuminating halo, braille and tactile, similar to US95.
- JUS95-30EN - Black anodised with illuminating braille, tactile and halo (similar to US95-EN)
- JUS91-30EN - Black anodised with illuminating tactile and halo (similar to US91-EN)
The Optic series is similar to some fixtures designed for American market that have a tactile and braille plate beside the buttons, but this type of plate which can illuminate both tactile and braille dots. These buttons are usually used for the American market which can meet ASME A17.1 standard.
Also known as Compact 3 US90 Optic, this button series was introduced in 2016. Basically the buttons are like US90 but without illuminating number, and has a braille and tactile plate next to them. The standard US90 (with illuminating number) and US90-EN are also matched with this series.
The alternative name of this button series is Compact 3 Optic. The first model of Optic series ever published. For pressable buttons, it can only mount with Compact 3 and Compact 3P chassis because these buttons design would not match for Compact 2 and Compact 2 Micro (unlike US91BB).
This series only available four series of pushbuttons; M-10 RSB, M-10 REB, M-10 RST and M-10 RET. The M-10 RSB and REB are equipped with braille marks, the only difference is that the RSB series are pure stainless steel while the REB series are stainless steel with black paints. Same goes with the M-10 RST and RET series, but both buttons do not equipped with braille marks. M-10 Series buttons are very rare.
This is a second version of the M-10 Series push buttons, with the RSB, REB, RST and RET series, but they are all equipped with white LED illumination lamp for tactile legend and Braille (if provided). There is a vandal resistant button series called M-20 RVR.
The US97-EN series are weatherproof buttons normally used in outdoor elevators such as in pedestrian bridge, subway underpass or train/railway/metro/subway stations. These buttons have round shape, black paint, white tactile, and illuminating halo with various colors.
Also known as Compact 2 US91 Bar, these are extra wide buttons to identify main floor or special floors. They also matches with US91, US91-EN, and other button styles as an option.
US85 and US85 Braille (pre-2016)
Please refer to US85 and US85 Braille section above.
Dewhurst continued to makethe US85 and US85 Braille buttons and didn't take any revise and modify for them. There are only a few installations of these buttons. These types of buttons has been discontinued in mid-2016 and replaced with the New US85 (which already dropped the "New" off).
"New" US85 (post-2014)
Dewhurst introduced their completely redesigned version of the US85 buttons (originally named as New US85) in 2014. The new chassis is different than the one used on both the US85 and US85 Braille buttons which had similar surface and illumination type in the current Jumbo version of the Compact series. Although they were introduced in 2014, the original US85 and US85 Braille were still in-production until mid-2016 and the "New" prefix has been dropped off from the name.
The options (or difference between the former US85 and US85 Braille) in this series are:
- Colours for illumination are available in red, yellow, green, blue and white.
- Comes in either stainless steel or stainless steel faceplate with a black paint (for EN81-70 standard).
- The stainless steel faceplate also comes with a green paint to indicate a main floor. In addition, the button is raised more than the other buttons. Commonly found in the United Kingdom.
- The stainless steel faceplate for alarm and intercom buttons has a yellow paint (for the lifts installed under "Design Manual: Barrier Free Access 2008 (BFA 2008)" standard in Hong Kong and EN81-70 standard).
- Different colour illumination of bracing and tactile symbols or numbers and Braille can be chosen.
- Button plate can be replaced with the Jumbo JUS90 series or Jumbo JUS96 series.
Please refer to Keyswitches section above.
Nowadays, Dewhurst have completely replaced the model of keyswitches because the larger "Compact" series buttons range were issued in 2000s.
These keyswitches usually matches with Compact 2 and Compact 3 for standard depth, The slimmer version, also known as Low Profile, usually matches with Compact 2 Micro and Compact 3P. M-20 is also for standard depth.
- Standard depth
- Slimmer version
Dewhurst also makes LCD displays floor indicators, from plain to full color displays. The current LCD displays in-production are:
- LD-33 Mono 3.3"
- LD-88 Mono 5.7"
- eScreen LCD Color
- R1 Range - compact high quality full color LCD display.
- S1 Range - full TFT color LCD display.
- iS2 Range - premium full color display with multimedia.
- Panorama - a revolutionary display which uses LED-backlit LCD displays with enchanced dynamic contrast and brilliant color depth. Available in three screen sizes; 19", 28" and 38".
Dewhurst is also a distributor of Avire's E-Motive LCD displays.
Dewhurst currently makes the following LED displays.
- ULS47H: These LED indicators widely used in elevators installed in public housing blocks in Singapore which were built by the Housing and Development Board (HDB) since the 1990s. It is still used today in new installations, mostly under the Lift Upgrading Programme.
- Other series below which looks similar to each others:
Vandal Resistant displays
- UL16: LED digital segments displays. UL16 indicator uses 16-segment displays and are commonly found in NCP car parks in England, and some Public Housing Estates in Hong Kong, mainly Hitachi, Schindler and Sigma.
- UL200: Small square illuminating numbers which are arrange into an analogue display. They are also provided with the Hidden Legends indicators due to their similar appearance.
- LED dot matrix series below which looks similar to each others:
Hidden Legends indicators
- UL200: Small square Hidden Legends indicators with icon or informative message such as overloaded, out of service, lift arrived, etc. They are also available in other languages as well such as Chinese and Hebrew. These indicators are either made of stainless steel or polycarbonate.
- InForm: These are either square or round Hidden Legend indicators with an illuminating icon on a black background.
- US90: Since the US81 series buttons were discontinued in the 2000s, their US81 Hidden Legends Indicators were also discontinued on the same time and replaced by the current US90 series.
- Hidden Legends indicators series below which looks similar to each others:
These are hall keypad fixtures for elevators equipped with their Destination Control Systems, Ethos Navigator (by their division, Thames Valley Controls) destination dispatch. They consists of a large LCD touch screen and keypad. There are two types of keypads; one is En-Pad Type 4 which features stainless steel buttons with non-illuminated legends, and another one is En-Pad Type 2 which features black buttons with illuminated legends.
These are elevator identification signs, mainly for destination dispatch elevators. Dewhurst currently makes five types of identification lanterns:
- Mirror Blade
- UniBlade ID
- UniBlade Flush ID
- Cube ID
- UniBlade Lantern + ID
Dewhurst currently makes four types of hall lanterns:
- Blade Lanterns
- UniBlade Lanterns
- UniBlade Flush Lantern
- UL200 Lanterns
Wallraff Dial Indicators
Dewhurst introduced Wallraff Dial Indicators in 2015-2016. These are custom designed ornate dial indicators which are made of either solid brass, alloy or bronze. Wallraff is an approved partner of Dewhurst.
These are round buttons with illuminating halo, braille and tactile.
These are solid metallic round buttons with braille, tactile and illuminating halo. There are also five other variants of Series 44 buttons.
- Shape 2 - round solid metallic or brass button with illuminating halo and black frame.
- Shape 3 - square metallic button with illuminating halo.
- Shape 7 - round metallic and protruding button.
- Shape 9 - round metallic button with a small lamp on the top.
- Shape 10 - similar to Shape 9, but has a small lamp on the top and bottom.
These are round buttons with reinforced illuminating glass tactile, braille, as well as an illuminating halo.
Notes and references
- ↑ ??
- ↑ 2.0 2.1 Elevator Hall Button Repairs
- ↑ 葵涌美順工業大廈日立拉閘貨用升降機；Hitachi gated freight elevator @ Mai Shun Industrial Building, Kwai Chung
- ↑ 旺角通菜街6至8號三菱升降機；Mitsubishi elevator @ 6-8 Tung Choi Street, Mong Kok.
- ↑ 中環好利商業大廈Fujitec升降機
- ↑ 6.0 6.1 Some major stations will adopt high speed lifts in upcoming years. The adoption work of － The internal lift connecting concourse and platform 1 at Heng Fa Chuen is finished and re-opened for service (facebook page: MTR Service Update)
- ↑ Dewhurst Product Guide 2016 (Archived version in this wiki)
- ↑ Dewhurst fixtures guide for lifts (Revised in 2013, Archived version in this wiki)
- Dewhurst fixtures component for lifts
- Dewhurst fixtures guide for lifts (Revised in 2013, Archived version in this wiki)
- Switching Components fixtures component for lifts
- NK Liftinterieur - Dewhurst (including real prototype fixtures display)