KEW 1009C Digital Multimeter is a multifunction digital multimeter that can test voltage, current, resistance, capacitance, frequency and DUTY. The product is safety certified and features REL function, auto power off function, data hold function, diode and continuity test function, automatic range function, frequency measurement function, DUTY (pulse width/pulse cycle % display) measurement function, etc.
This manual explains safe handling of the KYORITSU 1009C digital multimeter, including warnings about high‑voltage measurements, moisture, and battery replacement. It also describes the instrument’s functions such as automatic ranging, data hold, REL, and auto‑shutdown.
The multimeter can measure DC/AC voltage, DC/AC current, resistance, capacitance, frequency and duty cycle. Detailed operating procedures for each measurement mode, key functions, battery and fuse replacement, and cleaning instructions are included. This manual is written in Chinese.
Do not measure in environments with combustible gases, as sparks could cause an explosion.
The instrument automatically powers off after about 30 minutes of inactivity; pressing any key will wake it.