MR SIGNAL MR9270S+ HART Signal Generator & Calibrator Compact multifunction calibrator with built-in HART communication. Supports current (0–24 mA), voltage, frequency, thermocouple, RTD, resistance, and more. Can simulate and measure signals with high accuracy. Ideal for field testing of transmitters, PLCs, and control systems. USB port for PC logging. Rechargeable battery with long runtime. Lightly used, fully working condition. Inputs (Measurement / Readback) ✅ 0–24 mA current input ✅ 0–12 V voltage input ✅ Passive loop current reading ✅ Frequency input (for signal testing) ✅ PWM signal input ✅ Resistance measurement ✅ Millivolt (mV) input ✅ Thermocouple reading (K, J, T, etc.) ✅ RTD input (e.g., Pt100) Outputs (Signal Generation) ✅ 0–24 mA current (active source) ✅ Passive current output (simulates 2-wire transmitter) ✅ 0–12 V voltage ✅ Frequency output (up to 20 kHz) ✅ PWM signal output ✅ Millivolt (mV) output ✅ Resistance output ✅ Thermocouple simulation (Types K, J, T, E, R, S, B, N) ✅ RTD simulation (e.g., Pt100) ✅ 24 V loop power supply ✅ Step and ramp auto-cycling (e.g., 4‑8‑12‑16‑20 mA for transmitter test)