Features:

•Built-in advanced microprocessor, strong anti-jamming capability;
•received signal: a passive switch one way;
                  b RS485 communication alarm signal;
•Output signal: DC pulse signal 16, 16 passive switch signal;
• Display: High brightness LED signal lights;
•alarm information is automatically maintained until the system is reset to facilitate unattended;
•with our XH-G300A, XH-G300B series controller supporting the use of