PCE Instruments Digital Current Calibrator (PCE-123) is a portable and versatile tool designed for the simulation and measurement of electrical signals, making it ideal for testing and calibrating controllers, measuring instruments, and process control devices.It features automatic step and ramp functions, intuitive keypad operation, and a large LCD for easy readability. The calibrator meets ASTM standards and is widely used in electronics workshops, trade, and automation industries.  Specifications and Dimensions Measurement parameters: mA, mV, V, frequency (Hz), temperature (C/F) DC Current Range: 4 to 20mA / 0 to 20mA / 0 to 24mA Resolution: 1A Accuracy: 0.025% 3A Voltage Ranges: 0 to 100.00 mV 0 to 10.000 V 0 to 1.0000 V Frequency Range: 1 to 62,500Hz Temperature Compatibility: Type-K, J, E, T thermocouple sensors Operating conditions: 0 ... 50 C / 32 ... 122 F,