Features: 1Our wireless nurse call button alert system for patient and careiver is simple to use and provides piece of mind. 2reat for use as an alert aid for elderly or disabled to quickly and easily call for help, simply press the call button to alert the careiver via the wireless receiver. 3System rane of up to 500+ ft in open area ? 32 melody/alarm sounds to choose from, adjustable volume control, and multiple receivin options to eliminate interference from other devices 4Call button with a lanyard can be worn as a pendant, carried on pocket, or placed at bedside , and it is water resistant. 5There are hanin holes on the back of the receiver, which can be hun on the wall or placed on the desk for convenient movement at any time.Condition: 100% Brand NewItem Type: Wireless Alert SystemMaterial: ABSColor: As shown in the picturePaer Size: Approx. 12x6.5x3.5cm / 4.7x2.6x1.4in Transmitter Size: Approx. 8.5x4.5x1.5cm / 3.3x1.8x0.6in Weiht: Approx.205/7.2ozPaer Battery: 3 x AAA battery(Not included)Transmitter Battery: CR2032 button battery, 210MAH(Included)The 16-bit codin is adopted to effectively avoid the interference between neihbors32 (9 alarms sounds +23 harmonious music) are optionalLow voltae reminder function (if the liht of the host or transmitter is always flashin, please replace the battery in time)Packae Included:1 x Paer(Battery Not Included)1 x Transmitter1 x Instruction Manual