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3 in 1 Exit Push Release Button Panel for Electric Door Strike

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US $9.99
Shipping cost: Free Shipping To Shipping cost:   USD$ 0.00 To United states Via Estimate shipping fee
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While exit signs were more visible due to large letters, even a 60-watt bulb shown through a plastic or glass cover (see image), appeared somewhat dim. 3 in 1 Button Switch has do not disturb, please clean, doorbell button function. Made of durable plastic materials, used in conjunction with the bedside control panel.

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  • Specifications:

    • Operating Voltage: AC220V
    • Features: Do not disturb, please clean, doorbell button, 3 in 1 
    • Light Show: Please clean up, do not bother with a light show
    • Signal Output: doorbell button with normally open, normally closed output
    • Use: Used in conjunction with the bedside control panel
    • Material: Plastic
    • Size: Approx. 8.6 x 8.6cm / 3.4 x 3.4in(L  x W x H)


    3 in 1 Exit Push Release Button Panel for Electric Door Strike

    • Square family office emergency panic button

    3 in 1 Exit Push Release Button Panel for Electric Door Strike

    • Emergency panic button is perfectly suitable install in family or office 

    About Exit sign:

    • Early exit signs were generally either made of metal and lit by a nearby incandescent light bulb or were a glass cover that fit directly over a single-bulb light fixture. The inherent flaws with these designs were that, in a fire, the power to the light often failed. In addition, the fixtures were small and dim, making them hard to spot in a fire where smoke often reduced visibility. Better signs were soon developed that more resembled today's modern exit sign, with an incandescent bulb inside a rectangular-shaped box that backlit the word "EXIT" on both sides. Being larger than its predecessors, this version of the exit sign solved some of the visibility problem. The sign was only useful as long as main power remained on
    • As battery-backup systems became smaller and more efficient, some exit signs began to use a dual-power system. Under normal conditions, the exit sign was lit by main power and the battery was in a charge state. In the event of a power outage, the battery would supply power to light the sign. It continued to discharge until main power returned to the unit or the battery was no longer able to provide sufficient power to light the sign. Early battery-backup systems were big, heavy, and costly. Modern systems are lightweight, can be installed virtually anywhere, and are integrated into the fixture, rather than requiring a separate box. As batteries improved, so did the amount of time that a fixture could remain lit on batteries
    • While exit signs were more visible due to large letters, even a 60-watt bulb shown through a plastic or glass cover (see image), appeared somewhat dim. With the development of fluorescent lamp and light-emitting diode technology, exit signs could be made even brighter to show up in the limited visibility of a fire situation, and/or use less electricity. LED signs work by combining a large number of bright light-emitting diodes to illuminate the sign from inside. Fluorescent bulbs work in the same way as incandescent bulbs, back-lighting both sides of an exit fixture from the inside. Because an exit sign is constantly lit, fluorescent bulbs need to be changed more often than LEDs. As a rule, LEDs have a very long life, and may last for 10 years or more of continuous use, although the brightness may diminish. Incandescent bulbs are still in use, because they are cheap and common, even though they use more electricity and require frequent replacement. In recent years, radioluminescent and phosphorescent signs require no electricity have also been developed. Radioluminescence uses the radioactive decay of tritium to light the sign, while phosphorescence uses light-emitting phosphors to glow in the dark. While both of these signs meet California State Fire Marshall standards, where practical, electricity is used in the vast majority of signs

    Package Included:

    • 1 x 3 in 1 Plastic Button Switch

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• If the order has already been shipped; you may return the item to us postmarked within 30 calendar days of delivery. Please contact our Live Support to inform that.
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