... is Exib. 3.Explosion-proof Intrinsically Safe Automatic Telephone BOZZ KTH106-Z EXPLOSION-PROOF TELEPHONESpecificationsintrinsically safe ,with ... .AplicationKTH106-Z mining explosion-proof intrinsically safe automatic telephone is produced according to the standard Q/HX001- ... and double audio frequency, configured with KTA104 mining telephone coupler and dispatching desk whose outputting signal meets ...