360 Degree Wireless Smoke Detector 433 MHz Smoke Detector Alarm

Features: Support three alarms: independent + acousto-optic + wireless transmission network alarm. Full snap-in patented structure, simple installation, no need for debugging and wiring. 360 degrees smoke detection and alarm, no dead angle, reliable. Built-in high-sensitivity sensing technology, reliable and safe. Built-in 110 dB sound and light alarm reminder, effectively prompting people to evacuate. Ultra-low-power microcontroller + photoelectric principle technology, long standby life battery use for 3 years. Adopt high-performance photoelectric two-way scattering patented technology of two-receiving & one-transmitting, stable, reliable and accurate. Low battery voltage alarm, when the battery voltage is lower than 6.8V, a warning tone is issued to remind the user to replace the battery. Rotary detachable top cover design to facilitate cleaning and battery replacement. Specification: Material: plastic Color: white Item Size: 100*32mm Transmission frequency: 433.92, Transmitting Code 1527 Protocol Launch distance: Open distance 200M, (external aerial 500 meters) Quiescent Current: