Old a non-contact induction testing electric pen

AC voltage range AC: 90 - 1000V ~ (red indicator)
Working temperature: 0 ~ 40 ° C
AC voltage range AC: 24 - 1000V (green indicator)
Storage temperature: - 20 ~ 50 ° C
Frequency range: 50-60Hz
Humidity: ≤ 80% (non condensing)
Alarm mode: sound and light alarm
Altitude: < 2000m