... Constant Current Accuracy: ≤ 3% Output line:the red line is +,white line is - Supply temperature: 10 degrees -15 degrees Applications ... overvoltage, overcurrent, overheating protection circuit. 7,Anti-interference ability! When the TV set, microwave oven, soybean milk machine, tape recorders ... need to test products, please contact us with the following, we will reply you as soon as possible! Tel:+ ...