MK ceiling accessories are safe for use in all normal lighting applications. Do not mount them where they may be subjected to excessive moisture or dampness. Ceiling switches with standard white cords are 1.5m minimum length, and with standard red cords are 2m minimum length. Ceiling switches with white cords and bangles are 2m minimum length, and with red cords and bangles are 3m minimum length. 3164WHI is fitted with mechanical OFF indicator and has a full 3 mm contact gap when off. Also maybe surface mounted. Products must be installed in accordance with BS 7671: 2008. · · · BS EN 60669 · · No. of ways 1 · · No. of Poles 2 · · Comes with neon indicator · · Mounting type Flush/Surface · · Max. installation altitude: 2000 metres · · Terminal capacity 3164, 4 x 4mm’ 3 x 6mm’ I x IOmm’ I x 16mm’ · · Ambient operating temp – 5’C to +40’C · · IP3X