| Technical standard | Meet the requirements of GB 19880-2005 | 
| Operating Voltage | DC18~26V | 
| Monitor current | ≤350uA | 
| Alarm current | ≤1.5mA | 
| Alarm method | Press the operation panel | 
| Confirmation lamp (red) | Flash when running, always on when alarm | 
| Line system | Two alarm buses: T+, T- (non-polar)  Two power buses: DH+, DH- (with polarity)  |  		
| Operating temperature | -10℃~+55℃ | 
| Relative humidity | ≤95% | 
| Dimensions (without base)  |  			88mm×28mm×92mm(L×W×H) | 
| Weight | About 86g | 
| Color | Red | 
Wiring diagram for J-SAP-502 Manual fire alarm button base
