DZS Elec 5V 4 Channel Relay Optocoupler Isolation Module Red Board 3-5V High and 0-1.5V Low Level Triggered Load AC 0-250V / DC 0-30V 10A SCM IO Control auspowers_batchsix Charge it Up and Power

Charge it Up and Power it On2

Great addition for your decor or as a gift to someone special

can get a large transmission ratio

Two 4" x 6" Discount TENS self adhesive dual electrode pads

Reading temp is inaccurate

DZS Elec 5V 4 Channel Relay Optocoupler Isolation Module Red Board 3-5V High and 0-1.5V Low Level Triggered Load AC 0-250V / DC 0-30V 10A SCM IO Control auspowers_batchsix Charge it Up and PowerDZS Elec 5V 4 Channel Relay Optocoupler Isolation Module Red Board 3 5V High and 0 1. 5V Low Level Triggered Load AC 0 250V DC 0 30V 10A SCM IO Control Feature: Module Size: 73x50x18. 5mm (LxWxH) 4 Fixed Holes for Screw: Diameter 3. 1mm Work Voltage: 5V Quiescent Current: 5mA Max Current: 190mA Trigger Current: 3 5mA Low Level Trigger Current: 0 1. 5V High Level Trigger Current: 3 5V Input Interface: 1. DC+: 5V positive power supply 2. DC : 5V