Ambient temp：32°F to 131°F（0°C to 55°C）
Relative humidity：10%-95%
Transmit temp：-40°F to 158°F（-40°C to 70°C）
Supply power：AC185-V245V,50/60HZ
OutputvoltageRange:0Vto220VOr supplypower voltage
Voltage test Precision:+0.5% /-0.5%
Voltage repeat test precision:+1%/-1%
Voltage stability precision:+1%/-1%

Noise rejection：CMMRR>100DB
Sampling frequency：10HZ(100mS)
1Point Load：6A/1320W/220V or 660W/110V
F1,F2,:250V-6A(Special fuse)