and high quality. 2MS7221 voltage and current calibrator is a signal source and measurement tool. 3 This calibrator is used to measure or output 0~24mA DC current loop and 0~10V DC voltage. 4This product can measure loop current signals with very high accuracy and 0.001 mA resolution. 5. The calibrator measures the voltage output process signals from PLC and transmitter. Features: 1. High quality. 2.MS7221 voltage and current calibrator is a power supply and measurement tool. 3. This calibrator is used to measure or output 0~24mA DC current loop and 0~10V DC voltage. 4. This product can measure loop current signals with very high accuracy and a resolution of 0.001mA. 5. The calibrator measures the voltage output process signal from PLC and transmitter Specifications: Status: Model: PM7221 Function range resolution DC voltage input 0 ~ 100 mV 0.01 mV 0 ~ 10 V 0.001 V Range resolution accuracy 0 ~ 100 mV 0.01 mV 100 mV 0.01 mV 0.02 % + 2 10 V 0.001 V 0.02 % + 2 Input resistance: 1M (nominal), < 100pF Overvoltage protection: 30 V Voltage drive function: 1 mA DC voltage output 0 ~ 10 V 0.001 V Loop power output 24VDC Output unmeasured Output current parameters: Current input/output range resolution accuracy 24mA 0.001mA 0.015%+4 Overload protection: 250mA, 250V fast-blow fuse percentage display: 0%=4mA, =20mA Current source mode: Compliant Battery voltage 6.8V, 1000 at 20 mA Weight: approx. 627 g / 22.1 oz Dimensions: approx. 190*90*55mm/7.5*3.5*2.2 inches Packing list: 1*PM7221 Voltage and Current Calibrator 2*Test Leads 1*Bag Note: Batteries are not included.