Is the transistor on the siren out of the box?
Model CMP5950 a search came out. Can be online shopping
2SC4058 use power amplifier switch tube parameters NPN, 600V, 10A, 100W. Replacement 2SC3872, 2S4157, 2SC4459.
There is a band-pull NPN transistor, and the other 23 is an NPN transistor
