415 Digital stopwatchDetailed product description：

The main functions of the 415 digital stopwatch are:

Single channel: closing and opening time of the air contact, positive voltage application time.
Dual channel: time difference between two signals, start signal: null contact, positive voltage, (optional) stop signal: null contact, positive voltage, (optional) and designed with strong anti-interference circuit.

Main technical specifications of 415 digital electronic seconds:

Instrument form: Handheld and portable
Adaptive signal: air contact point/positive voltage (5-100V)
Measurement range: 0.0001s (seconds) -9999.9s (seconds) divided into four levels of measurement range
Function: Continuous, triggered
Time standard accuracy: ≤ 5 × 10-5
Measurement error: ≤ 5 × 10-5 (5/100000) ± 1 last digit
Weight: Approximately 1kg
Power supply: 220V ± 10% 50Hz
Reset mode: manual, automatic (triggered)
Volume: 185 × 142 × 115mm