"PAN RCD socket testerGreen and red LEDs indicate that the power outlet is wired correctly.
RCD test 30 mASocket test.
No battery requiredTechnical dataVoltage range: AC: 220 - 250 VCategory: II 600 VDimensions (mm): 65 x 61 x 57Weight (g): 56Type: PAN earthed contact test RCD"