GJJM-1 Solid state relay monitoring moduleDetailed product description：

The GJJM-1 solid-state relay monitoring module is mainly used to monitor the switching performance of solid-state relays and determine whether the electric heater load is in an open circuit state. When the solid-state relay switch is damaged and directly conducts, or when the electric heater load is open circuited, the monitoring module can promptly output contact switch signals and light up prompts. To prevent the electric heater from being burned out due to the loss of control of the solid-state switch, and to promptly detect the open circuit and broken wire status of the electric heater.

Input sampling voltage	3～32VDC
Input sampling current	1~10mA
Sample voltage at output end	40~440VAC
Sampling current at output end	0.1~2.2 mA
Control power supply voltage	12VDC or 24VDC
Static working current	≤10mA
Dynamic working current	≤50mA
Action delay time	≤2 S
Output contact	3A/240VAC
Work instructions	Dual color LED
Operating Temperature	－20 ～ 80 ℃
Input, output, and control power insulation voltage	≥2500V
Overall dimensions	94×25×35 mm3

External dimensions Installation wiring diagram: (unit: mm)

Product selection precautions:
Before connecting the control power supply, the monitoring module must first connect the main power supply of the solid-state relay output terminal, otherwise the monitoring module may issue an alarm signal before the main power supply is connected.
When the solid-state relay and electric heater are working normally, the monitoring module indicator light displays green and the signal output contact is normally open. When the solid-state relay is damaged or the heater is open, the indicator light displays red and the signal output contact is closed, connecting the external alarm or other control circuit.

The monitoring module does not have a self-locking function internally. Once a fault is detected and activated in the solid-state relay or electric heater, the monitoring module can automatically resume normal operation once the fault is resolved.