Wired sirens
prices on 1 modelWired
— this connection is not very convenient when initially placing the siren - due to the need to lay wires. And the distance to the control device is often limited by the length of the cable. On the other hand, the connection is as reliable and safe as possible; such sirens are much cheaper than wireless ones, and their operation does not require separate power sources - energy can be supplied directly through the wire used for connection.