4Pcs 12V 1CH Channel Relay Module With Optocoupler For PIC AVR DSP ARM

Specification Product Name 12V Relay ModuleMaterial Copper Plastic1 Channel Size 4 2cm x 1 5cmWorking Voltage 12VUse 1 Support all microcontroller control 2 Industrial field 3 PLC control 4 Home intelligent control 1 Channel 1 Onboard EL817 optocoupler strong anti jamming capability with optical isolation 2 Onboard 12V 10A 250VAC 10A 30VDC relay relay life long continuous pull 100 000 times 3 The module can be directly and microcontroller I O link with an output signal indicating 4 The module has a freewheeling diode protection short response time Note 1 We provide clear pictures measurements where possible Please check as much as possible to make sure the item is the one that you need 2 Please allow 0 5 1 inch difference due to manual measurement 1inch 2 54cm 3 There are no instructions included in this kit Package Included 4 x Relay Module