Ǫuick and Easy DIY Installation. Wireless Siren acts as the HUB to connect up to 60 Accessories. Zigbee and Zeewave compatible 4 Volume levels (low, medium, high, mute). Ultra Loud alarm siren (110db) KIT INCLUDES: 1 x Wireless Siren & Hub 1 x Wireless Motion Sensor 1 x Wireless Door/ Window Contact 2 x Wireless Remote Control