Settings: Lights, digital control, key state Description:
Start indicator: START (red) indicator light, said the relay is closed, the machine starts to work.
Stop indicator: STOP (green) indicates the relay off, the device stops working. Digital: middle red LED to display current temperature detected, the left green LED to set the start temperature, the green LED on the right to set the stop temperature.
LL is the sensor open.
HH is out of range, the thermostat will be forced to close the relay.
— as high-temperature protection.
Indicator: Off The relay is switched off, Always indicate the relay is closed.
Note: Relay output interface is a switch when it working, these two ports are connected. If not work, these two ports are not connected.