Honeywell 11TW1-3D Manufacturer: Honeywell Switch Type: 2-position flat-top locking toggle Datasheet: Honeywell tl series switches Substitute : 11TW1-2 prefix can substitute for 11TW1-3 prefix anywhere. 11TW1-2 is an ON/OFF actuation, instead of 11TW1-3's ON/ON actuation. 12TW prefix (double-pole) can substitute for 11TW prefix (single-pole) anywhere, and vice-versa. They are the same size.