Replacement MAP77 battery back up siren.
-- 4 wire --
Red 12v
Black -
White positive siren trigger / to siren output
Blue not used
Supplied with 2 keys
Direct replacement battery back-up siren for the MAP77 system
Four-wire connection with a clearly identified trigger wire
Two isolating keys supplied so the vehicle battery can be serviced
Replacement siren for MAP77
4 wire: red 12V, black negative, white positive siren trigger / siren output, blue not used
