Pan Volttester 400FL
400V AC/DC
Used to verify the absence of voltage, even with discharged batteries.
8 LEDs 6-400 V AC / DC
• Low voltages up to 24 V: green LEDs, dangerous voltages from
50 V: red LEDs
• Indication of polarity for DC
• With test button for 30mA RCD - Circuit Breakers
• Switchable load for suppressing stray voltages
• Suitable for indoor use only
• No battery required
More information and a link to a video here