Other Related Wireless Callers

The main factors affecting the transmitting distance of wireless electronic products
The transmitting power of the transmitter;
The height of the antenna, generally speaking, the higher the antenna, the better the signal;
How many routers. The router is used to establish a wireless call network between the call point and the main controller.
The sensitivity of the receiving end.
Physical characteristics of obstacles: what material, such as: blended soil, steel plate, etc...