Advances Smart Home Security Start-Up Kit. Works on Sigbee RF868Mhz. No Hub Needed. Comes with an Indoor IP Camera (acts as a Hub), 1 x Wireless Rechargeable PIR Sensor, 1 x Wireless Rechargeable Door Contact, and 1 Remote for On/Off Alarm. This kit is all that you need to protect your home, monitor it from anywhere via your smartphone. The Kit included a Smart Indoor IP Camera (works on 2,4G only) which has 2-way audio and motion sensor which acts as the Hub. Apart from IP Camera Host, it includes all wireless sensors such as 1 x PIR Sensor, 1 x Door Contact, and 1 x Remote for Switch on and Off the Alarm. The Camera communicates with Sensors through RF868Mhz frequency whereas it communicates to your smartphone through Wi-Fi. Very Easy to Pair and Install. Can add any number of additional PIR Sensors or Door Sensors to the kit to make your home more secure. Customisation as per your requirement. All the sensors are wireless and work on a battery that can last up to 1 yearFeatures No need to change batteries ever. 110~240VAC  Solar siren, Rechargeable battery  Alarm Noise Level: 120db Flash and sound alarm wall mounting