| Basic home SPST light switch. The most familiar light switch, the common 'light switch' is actually referred to by hardware dealers and electricians as a 'single pole switch.' With a single-pole light switch, the simplest and most common type, flipping the lever up completes the circuit, turning lights or appliances on and flipping it down breaks the circuit, turning lights or receptacles off. A single pole switch has two brass terminal screws on the side. Be sure to download the AVI for a full 360 look at the product you're buying. | 
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