This keyswitch uses tubular keys with black plastic inserts to easily identify them. It has 2 positions and the key is removable from both. There are 4 connection terminals, however, it is not a regular Double Pole Single Throw (DPST) switch, but rather a dual Single Pole Single Throw (SPST) change-over switch as each pair of contacts is in the opposite state to the other. So it could conceivably be wired to create a Single Pole Double Throw (SPDT) switch, or used in its native state to independently switch one circuit on while switching another off with complete isolation. Contact rating is 2A, 250VAC. Switch Type : Key Pole Throw Type : SPST Throws / Positions : 2pos Switch Function : Locking On/Off Switch Connection : Solder Tags Break/Make Function : Changeover Mechanism Mechanism Material : Metal