The Nash Siren R3+ Receiver works alongside the Nash Siren R3+ Alarm system, letting you know when a bite occurs without needing to be right next to your rods. It pairs directly with individual R3+ Alarms to relay both the exact tone and LED colour of the alarm that has been triggered, so you can tell which rod is active at a glance. - Exact tone replication from each paired R3+ Alarm - LED colour replication from each paired R3+ Alarm - 4 channels for pairing with single R3+ Alarms - Fifth 'buddy channel' pairs with up to 32 other R3+ alarms - Volume adjustment, mute and vibration function - Last event recall - Powered by 1 x CR123A battery (not included)