1. No. of Channel: 4
2. Trigger Voltage: 5VDC
3. Triode drive, increasing relay coil
4. High impedance controller pin
5. Pull-down circuit for the avoidance of malfunction
6. Power supply indicator and Control indicator lamp
7. Power supply and relay instructions, lit, the disconnect is off;
8. The input signal, signal, common Terminal and start conducting;
