Simple siren voltage supply range from 6 V to 14 V, with current consumption of 250 mA. Generates 6 successive sound frequencies. Connect the device using two wire with removed insulation. The diameter is 54 mm, height 55 mm.
Siren wi-fi for use in confined areas. Has the powerful sound of 100 dB and a built-in sensor of temperature and humidity is Very easy to install, works without wires. Home has partnered with Google and Amazon's Alexa. Powered by two batteries CR123A, or through the micro usb connector is 5 V.
Wireless siren, powered by two batteries CR123A , or by using the microUSB cable. The network communication wi-fi. The siren can be combined with other sensors, for example, flooding or movement when it detects water movement, raise the alarm. The device generates a sound power of 100 dB.