SB-116 Manual call point 2-wire
The conventional manual call point is designed for fire alarm systems and security alarm systems
It is with pull down plate for safe and easy press to call at emergency condition and easy to restore after the alarm. 
It can be reset by using the key to open the case without breaking the glass. 
It is compatible with all the conventional fire alarm control panel.
470 Ohm resistance
Easy surface mounting base included.

All wiring must be installed in compliance with the National electrical code, applicable state and local codes and any special requirements of the local authority having jurisdiction. 
Specification:
Dimension:140mm*105mm
Height: 45mm
Weight: 220g
Operation temperature range: -10 C to 50 C
Operating Humidity range: 10% to 93% relative humidity, non condensing 
Latching alarm: Reset by momentary power interruption
System voltage (nominal): 24VDC (9V-28VDC)
Standby current: 60uA @24VDC
Alarm current: 10-30 mA @24VDC