The Laserliner Socket Tester Plus is a professional wiring and RCD tester for conducting a quick electrical wiring check for user safety and prevent damage to expensive electrical equipment.
Verification checks include Polarity-Earth voltage and an RCD test. The RCD test verifies that an RCD rated at 30mA will trip within 300Ms when a nominal 30mA earth fault current is applied.
Faults are indicated through 3 indicator lights showing:
Missing neutral connection.
Missing earth connection Live faults.