Description This fishing bite alarm with LED indicator is very sensitive to fish which swallows the bait, it sounds loud so you can walk awayor have a rest over one hundred meters, do not worry about missing the hooked fishes and the rod. Features: Include: 1 * Receiver, 6 * Transmitter, 1 * User Manual and 1 * Storage Box -Transmitter Low battery signal. LED alarming signals with high output speaker(drop back with different Tone and green red LED). High visibility LED latching about 40 second memory. Adjustable Sensitivity, Volume, Tone button. Extra plug for swinger(not included). Separate battery compartment. Powered by a 9v battery(not included). Special rubber finished surface. 256 variable code enough to prevent interference from another angler. -Receiver Over 100m transmission range. On/off, Sound, vibration button. 4 different color LEDs to match 4 different alarms. Receiver will sounds when received signal, and number indicated on screen. Inside automatic variable code repair function. Separate battery compartment. Powered by a 9v battery(not included). Specification: Model: Style-3 / Style-4 / Style-6 (optional) -Transmitter Work volt: 9v Work current: 30mA Standby current: 0.15mA Off current: 6uA Work frequency: 433.92MHZ Modulate mode: ASK Transmission range: 100M Work temperature: -30C-70C -Receiver Work volt: 9 v Work current: 30mA Standby current:2.5mA Off current: 3uA Work frequency: 433.92MHZ Modulate mode: ASK Receive sensitivity: -110dbm Work temperature: -30C-70C Box size: 32 * 22 * 6cm / 12.5 * 8.6 * 2.3in Package weight: 742-971g / 1.6-2.1lb Package list: 1 * Receiver 6 * Transmitter 1 * User Manual (English) 1 * Storage Box