Features DUAL CIRCUIT: The solid state relay uses dual SCR inputs with zero volts starting voltage and zero Ioff. VOLTAGE WITHSTAND: Opto-isolator is located between the input and output circuits. The isolation withstanding voltage between input and output is 2500V. CERTIFICATION: Solid state relay module passes load current aging test. EC CE certification and international ISO9000 certification. LED INDICATOR: The relay module has LED lights to show the working status in real time. You can operate this relay module clearly through the LED indicator, very direct and convenient. HIGH QUALITY: The relay module has a structure that is vibration and shock resistant and has stable performance. It can be used and operated without any worry about safety. Specification:  Material: Plastic+Metal Color: Shown As Pictures Weight: 124g Type: Solid State Relays Trigger Current: 40 Contact Switching Voltage: 480 Reverse Repeat Peak Voltage: 480 Off Speed: Normal Heat Dissipation Function: no heat sink Power Characteristics: medium power Rated Forward Average Current: 40 Frequency Characteristic: intermediate frequency Maximum Stable Working Current: 40 Poles: 3 poles Application: solid state Pick-Up Current: 40 Control Mode: AC-AC Load Current: 40A Load Voltage: 24-480V AC Control Voltage: 90-250V AC Control Current: AC:12mA On State Leakage Current: less than 2mA General Antihypertensive: no more than 1.5V AC Breaking Time: less than or equal to 10mS Pressure Resistance: 2500V AC Insulation Resistance: 500 mΩ / 500 VDC Ambient Temperature: - 30 ℃ to + 75 ℃ Installation: Bolted Work Instruction: LED Package List: 1 x Solid State Relay Note:It can only be used within 30% of 40a (12A) and a radiator should be added at the bottom.Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Package List