Crow’s Smoke detector is built with an advanced optical sensing photoelectric chamber and offer more than 10 years of battery life. FW2-SMK is cutting edge in fire safety. It sound an on-board siren, communicate through apps, and deliver alerts to your phone or other mobile device if an alarm occurs.
Photoelectric optical smoke chamber
Freewave2™ two-way ISM
GFSK with 5 frequencies & LBT
Low current Technology
Powered by a pack of 2 Lithium batteries 1.5V (Energizer L91)
Battery life: ≥ 10 years
Audible Warning by a built-in horn beeps once test mode, battery low or Alarm