Wireless Nurse Alert Pager 4 Receivers with 5 Call Buttons Works Upto 600 Feet\nWhen an accident occurs, the elderly or the patient may not be able to make a loud cry for help, thereby creating a hidden danger. Here comes a perfect solution. Our personal alarm system can make a noticeable sound through a complete system to provide the timely help.With premium material and advanced high-frequency technology, this wireless alarm system will emit a powerful and reliable signal (More than 600 ft) that can penetrate multiple obstacles such as walls, doors, iron gate, bricks, wood, etc. Excellent IP55 waterproof performance, this wireless caregiver pager is suitable for the wet environment and can also work normally after being splashed with liquid.This alert system button has 36 lovely music for daily choice, and 5 levels of volume (0db, 25db, 50db, 80db, 110db) that you can adjust according to the actual need, and the silent mode supports LED flashlight. Easy to use, simply plug the SOS s