... automatic controls, electrical equipment, and communication equipmen HB17...SL: output voltage and current are showed by the LED numeral meterService occasion ... apparatus, automatic control, electrical equipment, and communication equipment Parameters:Input voltage: AC 220V±10%, 50±5Hz Load efficiency: CV≤1x10 + ... )Ambient temperature: 0±40°C Relative humidity: ≤90% DC Power Supply 12V/15A,adjust type