1、Product Information: This pager open unobstructed reception distance of 350m, indoor practical distance ≥ 50M, transmission frequency: 433MHz. 2、Reliable Material: This pager uses Abs flame retardant material. It is green, environment friendly and pollution free, durable and easy to carry. 3、Modern Design: One button call, indoor host synchronous beeping, flashing lights to remind, power failure memory function, restart bell unchanged, accidental power failure and restart also the same original settings, no need to repeat the operation. 4、Wide Application: This wireless portable nursing pager system is suitable for children, the elderly, pregnant women, paralyzed patients, and people with disabilities. 5、Thoughtful Detail: This pager has 4 levels of volume adjustment, 38 ringtones any choice, the sound is clear and loud, the receiving host and transmitter are with LED lights, bringing more convenience at night.