Feature: 1. This multi-wire manual alarm button is designed for use with audible and visual fire alarm systems. 2. Standard manual call point equipped with advanced MCU control algorithm software. 3. Activation is achieved by pressing and pulling the handle downward to trigger the alarm signal. 4. When activated, the word "ACTIVE" appears in yellow at the top, and the handle extends below the unit. 5. Easy to operate, durable construction, and helps alert individuals during emergency situations. Specification: Condition: Item Type: Fire Alarm Button Color: As shown in picture Operating Voltage Range: DC 9-28V Alarm Resistance: 470 Ohm / 1W Operating Humidity Range: Relative Humidity 10%-93%, non-condensing Operating Temperature Range: -10C to 50C (14F to 122F) Package List: 1 x Fire Alarm Button 2 x Key 1 x Instruction Manual Note: Please note that either the new or old version of this product may be shipped at random. Please ensure you are comfortable with this before placing your order.