LASERLINER 083027A SOCKET TESTER PLUS Reliable tool for professional tradesmen & DIY enthusiasts Signalling of lifethreatening phase voltages For standard UK socket outlets with earthing contact BS1363 type G Error mode with 3 indicator lights LCD PE fault indicator RCD fault indicator lamp Voltage range 240 V ± 10 Frequency range 50 Hz FIRCD test current 30 m A ± 15 test time 60 &ndash 300 mins