SONOFF SNZB-04: A ZigBee door/window sensor, vital for smart security. Detects door/window activity, sends alerts. Enhance security, sync status on mobile. Create ZigBee-Wi-Fi device scenes. Instant light control upon door opening. Pair with ZigBee Bridge for hallway illumination. Enable camera function for visitor insights. Two-way audio for added safety. Versatile use: drawers, garage doors, more. Stick anywhere for continuous vigilance. Family sharing for collective monitoring. Quick, peel-and-stick installation. Elevate your security effortlessly with SNZB-04.