White plastic set of two switches for water heaters.
WYLEX 2LA / F
2 Point Water Heater Control
with flush downstairs switch
Both have a red neon indicator and the words '2 Point Control' below the switch.
These are rated 20 amps and would typically be used with a 3kW immersion heater.
A small Wylex logo is included above the switch.
This switch is a surface mounting type, with knockouts in the edges to accommodate the wiring.
This feature is essential as it prevents the heater being switched on by someone downstairs who could be unaware that the heater was being adjusted or replaced.
This is a flush mounted switch, intended to be mounted on a metal box recessed into the wall.
Both switches have neon indicators, as the position of the switch does not indicate whether the heater is on or off - it can be switched on/off from both locations in a similar way to lighting on a staircase.
The smaller downstairs switch is connected with 4 cores - 3 of which are used to switch the line, in the same way as two light switches would be wired.
The 4th core is a neutral, and only provided so that the neon indicator will work.
The large version of the wiring instructions image is high resolution and suitable for printing.