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AVS Data Battery Back-up 24-volt Siren (24V S-Series)
Large 24-volt data battery back-up siren for the 24-volt AVS S-Series (S5, S4, S3) only. Includes 2 x coded keys. Please advise the customer to record the key number in case they are lost and need replacing. Please note: because this is a 24-volt data battery back-up siren no other type of siren can be connected to the siren wire on the alarm module
