Feature:1. This is a compact reverse polarity switch module that can be used to change the polarity of output terminals 5 and 6.2. The most common use is to change the direction of a DC motor.3. Once power is supplied to the control voltage (terminals 1 and 2), the relay is activated and the output terminals of 5 and 6 will change polarity.4. The product has strong safety performance and high cost performance.5. Made of quality material, safe and practical, durable for use.Specification:Item Type: Relay Module Polarity Reversal Switch BoardDescription:DR21A01 5VDC 1 channel DPDT relay boardWorking Voltage: DC 5VWorking Current (Relay Connected): 35MAStandby Current (Relay Closed): <1MAInput Control Signal Voltage:0V-0.6V Low Level (Relay Closed),0.6V-2.4V (Unknown State).2.4V-24V High State (Relay is ON).Input Control Signal High Current:2.4V: 0.15MA5V: 0.5MA12V: 1.2MA20V: 2MARelay Load: 1A 125V AC; 2A 30V DC.Package List:1 x Relay Module Polarity Reversal Switch Board