Features 1This multi-wire manual alarm button is suitable for sound and light alarms when a fire occurs. 2Conventional manual call point, and it is operated by advanced MCU expert algorithm software. 3Press and then pull the handle down to activate the normal alarm open control. 4Behind the tilting position, the word "ACTIVE" will appear yellow at the top, and the handle portion will protrude from the bottom of the sign. 5Convenient to operate, durable in use, and it can remind people to escape the fire. Specification Condition: 100% Brand New Item Type: Fire Alarm Button Color: As the Picture Shows Operating Voltage Range: DC 9-28V Alarm Resistance: 470Ohm / 1W Operating Humidity Range: Relative Humidity 10%-93%, no Condensation Operating Temperature Range: -10C-50C (14F - 122F) Package List 1 x Fire Alarm Button 2 x Key 1 x Instruction Manual Note Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.