| Item | Technical Parameters |
| Loop voltage | 15~28V |
| Power voltage | DC24V（DC12V~DC36V） |
| Loop current | ≤1.0mA |
| Loop alarm current | ≤1.1mA |
| Power supply monitoring current | ≤30mA |
| Power supply alarm current | ≤35mA |
| Gas detected | Methane |
| Response time | ≤30s |
| Alarm threshold | 10%LEL |
| Wiring | Four wires
--L1 & L2 for loop connection - polarity-free;
24V & G for DC24 input |
| Addressing method | Electrical encoding |
| Signal transmission distance | 1500m(2.5mm2) |
| Working temperature | -10…+55℃ |
| Storage temperature | -25…+55℃ |
| Relative humidity | 95%RH |
| Sensor lifespan | 5 years |
| Connecting equipment | JB-TB-JBF-51S40-4 combustible gas alarm control panel
JB-TB-JBF-51S40-8 combustible gas alarm control panel |
| Applied standard | GB15322.1-2003 |
| Weight | 120g |
