Sell 3 Wire 0.28 best price

Description: Three wires digital voltmeter, 0.28" LED display, mini size, reverse connection protection. Measure voltage range 0-100V, need DC4-30V external power supply. Can directly work in 5v, 9v, 12v, 24v electrical circuit. Stable perfermance and high precision. Standard size and easy installation. Specification:Material: Plastic, Electronic Components Size: approx. 3. . .0cm/1.2 x 0.4 x 0.4inch Cable Length: Approx. 17cm Three-wire working voltage: 4.0~40V(with reverse protection) Three-wire detection voltage: 0.0~100V Display mode: 3 digit 0.28inch LED digital tube Display color: red, yellow, blue, green Working current: