DC Power Supply 15 volt 2.1 Amp Digital LED Screen Maintenance of communications-specific power, the power supply is designed for mobile phones and other communications equipment. Designed for maintenance, it uses the most advanced short-circuit protection resume. The protection of the rapid rate of, and a sound and light alam,after treating the unsorting. be ruled out after in 1 second automatically resume output. Voltage measurement interface. Can be replaced by precise digital voltmeter measurements voltages DC. Radio-frequency signal detection, Suitable for of communication equipment maintenance.