The PM-5135B is a red 0.56" digital display 5VDC Voltmeter 4-Digit, 2x2-wires
Specifications:
Voltage: DC 5V
LCD Display size: 0.56inch
Display Color: Red
Accuracy 0.5%, +/- 2 digits
Test voltage: 200mV
Test voltage: 200mV
Connection: 2 x 2 Wires