and high quality Features: Increase disposable fast blow fuse, to avoid false instrument damage caused by voltage 220V plug. All functions all use internal electronic switch, input and output has a corresponding button. Two connector terminals can be used regardless of input and output. It is easy to operate. In addition to having a conventional signal input and output functions,resistance, PT100.Cu50 RTD, thermocouple eight kinds of signals can be input and output, measure negative temperature. The sensitivity of thermal resistance and resistance to external excitation output current is reduced. Increase the output and the measurement accuracy. For both constant and non-constant resistance measurement method, expanding the usage of the instrument. V, mV, mA, Ω input and output has a corresponding button, directly call without advance menu, no combination of keys. Specification: Model: LB02 Current Output: 0-24 mA Voltage(V) Output:0-11 V Voltage(mV) Output: 0-110 mV Resistance Output:20-4000Ω Current Measurement Range: ±30 mA Voltage(V) Measurement Range: ±30 V Voltage(mV) Measurement Range: ±150 mV Resistance Measurement Range: 0-999.9Ω Size: app.7.6x12cm/2.99x4.72in(WxH) Quantity: 5 Pcs/Set Note: Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement, please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1 x LB02 Calibrator 1Pair x Pair Test Pen 1 x USB line 1 x Carrying Box 1x User Manual