NGT Set of Bite Alarms, Receiver. New to the Dynamic range, these bite alarms really are up there with the best on the market. They come with multifunctional settings to suit whichever way you prefer to get bite indication. Rolling code function - avoiding interference from other alarms. Each alarm and receiver require a 9v battery (not included). Can also be synced to the new NGT Dynamic receiver light (not included). This item is in the category "Sporting Goods\Fishing\Anglers' Equipment\Bite Alarms". The seller is "ric-209540" and is located in this country: GB.