The delkim txi plus bite alarm is the flagship and biggest seller in the plus range of delkim bite alarms and can be used in conjunction with the rx plus pro receiver. It’s packed with features to enhance sensitivity, bring more control, increase versatility and of course reliability; Delkim tx-i plus features: Advanced vibration sensing system: no moving parts, bite indications are received through patented vibration technology. Sensitivity settings: allows you to change the sensitivity to cover all weather / environmental conditions. Integral digital fm radio transmission Unique individual transmitter codes: stops activating other anglers receivers! Wide tone range & high volume (100db max) Twin clear leds- high visibility flash and latch leds with 5 variable led modes and night marking mode; available in white, red, purple, green, yellow & blue colors. Over 1 year battery life Anti-theft alarm 2 year guarantee. Factory boxes