Wireless call bell system are simple to operate; they are easy to program; and the buttons are relatively easy to press ^^ Wireless call system has 3 call levels; green color is ordinary call; red color is emergency call; the blue color is timeout call; you can choose different color call according to the degree of urgency ^^ Call record query; the alert system for elderly care has the call record query function; you can search the last 32 call records ^^ The three types of power supply for the call button system are; DC power supply; C-type power supply and battery power supply for your convenience ^^ Delete call records; after patient press the call buttonthe; nurse can delete the designated call recoeds and all cal records according to choice