CS Evolution CSE 240 (1 Viewer)

[FM02MZO]

Can anyone please tell me what the switch is for inside the above control box, as has got writing at the side of it but I cannot make it out ?

 

[FM02MZO]

Up is for Gel Batteries and down is for lead acid batteries, It actually says Gel and Pcb

 

[Techno]

Battery type selector for charger.
Gel or wet lead/acid

14.3 volts or 14.1

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