This system of transmission allows to send, through radio waves, a message (Under the shape of an electrical signal) from a transmitter to a receiver. The application of radio transmission is large, specially for alarm system: usually the thieves sabotage the telephone network and neutralize your telephone transmitter; to avoid this situation, you must install your telephone transmitter at the neighboor or a friend and, equipped with a transmision pack, your alarm system will be able to activate it at distance. The radio transmission range which is proposed to you, should allow you to find the product which adapt itself to meet your needs. This system can be use for paging, for transmitting an alarm to you neighbours or to complete your car alarm. Fox example when car alarm is triggered, the pager will be activated simultaneously an transfer a signal to the receiver carried by car's owner. The ref. 107 comprises a fixed 12Vdc transmitter and a portable receiver with 2 batteries ref. PP15V not included. The range varies from 500m to 3KM according to the surroundings and the accessories used. An amplifier A25W must be add for best results. Easy to wire just like any other siren and is triggered by a positive voltage.

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