A compact and original set of bite alarms with a receiver; this set has minimal transport dimensions, a long-lasting battery and an affordable price. Even with a price this low, it can be compared with much more expensive sets. These bite alarms and the receiver are very user-friendly. The signal between the bite alarms and the receiver can reach up to 110 metres in ideal conditions. The whole set comes in a hard plastic case to protect it during transport. In addition, the set is waterproof, and the plastic is resistant to mechanical damage. The bite alarm itself is powered by a long-lasting 12V battery type 23A. Turn it ON/OFF by holding the button for two seconds. After turning it on, the coloured LED diode will flash 3 times, when turning it off, it will flash once. When the device is turned on, you can choose one of the 5 volume settings, including the silent mode. The LED diode will light up for 10 seconds after each bite. The receiver receives the signal and indicates it with sound, light, and (if you choose this option) also with vibrations. With a V button, select one of the 7 volume settings, including the silent mode. To turn on the vibration mode, hold the V button for 2 seconds. The receiver has four coloured LED diodes that flash for 10 seconds after a bite. It s powered by 3 AAA 1.5V batteries. The receiver and bite alarms can store all the settings in their memory. The receiver comes with a practical strap. This product contains: Bite alarms 1x Receiver 1x Transport case 1x Strap for the receiver Receiver/features - 7 different volume settings, including the silent mode - Vibration mode - powered by 3 AAA 1.5V battery - LED diode flashes for 10 seconds after a bite - Reach up to 110 m depending on terrain conditions and battery condition - Memory feature - settings can be stored in memory even after the device has been turned off Bite alarm/features - 5 different volume settings, including the silent mode - Powered by 1 23A 12V battery - LED diode lights up for 10 seconds after a bite - Memory feature - settings can be stored in memory even after the device has been turned off - Waterproof Set 2+1 always contains blue and red alarm. Set 3+1 always contains blue, red, and green alarm. Set 4+1 always contains blue, red, green, and yellow alarm.