Amt-78 User Manual [hot] Here

Always test the meter on a known live voltage source (like a wall outlet) before measuring unknown circuits to confirm it functions correctly.

When the low-battery icon appears, replace the internal batteries immediately to maintain accuracy. amt-78 user manual

To maintain high accuracy, calibrate the AMT-78 before its first use, after long periods of storage, or when switching between drastically different testing environments. Step-by-Step Sensor Calibration Always test the meter on a known live

Reverse the probes for a test. The screen should read OL . Measuring Current (Amps, mA, Turn off the power supply to the circuit. Insert the black lead into the COM jack. after long periods of storage

Insert a reference coin matching the currency or token you intend to accept into the physical coin holder.