Feature: 1. This multi-wire manual alarm button is suitable for sound and light alarms when a fire occurs. 2. Conventional manual call point, and it is operated by advanced MCU expert algorithm software. 3. Press and then pull the handle down to activate the normal alarm open control. 4. Behind the tilting position, the word inchACTIVEinch will appear yellow at the top, and the handle portion will protrude from the bottom of the sign. 5. Convenient to operate, in use, and it can remind people to escape the fire. Specification: Condition: 100percent 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 10percent-93percent, no Condensation Operating Temperature Range: -10DegreeC-50DegreeC (14DegreeF - 122DegreeF) .w-e-text table td,.w-e-text table th,;.w-e-text table, Package List: 1 x Fire Alarm Button 2 x Key 1 x Instruction Manual