5/10Pcs DC 3V High Level Driver Module Microcontroller IO Port Relay Module Isolated Drive Control Board Output Signal Indicator

High-concerned chemical : None Model Number : Relays Control Module Brand Name : Shunmaii Origin : Mainland China Certification : NONE Certification : NONE Origin : Mainland China Model Number : Relays Control Module Main components : EL817, SRD-DC03V-SL-C Voltage : DC 3V/3.3V Product weight : 20g Product size : 70*20*17mm/2.76*0.79*0.67in