SPST, (on)*-off big push-button switch (horn switch) * momentary
Surface mounting switch commonly used for fog-horn or siren. Momentary action, horn will sound only as long as button is depressed. The switch is designed for typical mobile and marine 12-14 volt DC applications. The actuator is black plastic button, and the frame is chrome plated brass construction.
Brand name(s) : LKG, Philmore

Features:
Rated at 5 Amps 12-14 Vdc
Overall length is 2-5/8” by 1-1/2”.