Socket & See, Model SOK 40 Socket Tester 16A 230V ac

16A BS 4343 3 pin (2P+E) socket tester for testing 240V systems.

Logical green for go indication shows good wiring status - 3 green LEDs indicate good wiring status
Detects 18 faulty wiring condition
Continuous audible tone indicates correct wiring
Strong warbling tone indicates incorrect wiring
Audible fuse finding facility

Live - earth reverse
Live - neutral reverse
Faulty, neutral, earth and live
Missing live