The Turnip Smoke Detector uses photoelectric smoke-sensing technology, paired with a fixed heat limit, and a rate of rise limit. This means that the sensor will send an alarm signal to the security panel if it senses an excessive level of smoke, heat, or a rapid increase in temperature.


  1. Remove the mounting plate and pull the battery tab.
  2. Place the mourning plate on the ceiling exactly where you want the smoke detector and with a pencil, mark the location of the two screw holes.
  3. Taking care to avoid any electrical wiring in the ceiling, drill holes using a 5.0mm drill bit through the center of the marked locations. Push the plastic screw anchors provided into the drilled holes, and screw the mounting plate to the ceiling.
  4. Reattach the smoke detector back onto the mounting plate by inserting and twisting to the right.


  • Don't place smoke detectors in the following: bathrooms, kitchens, shower rooms, garages or other rooms where the smoke alarm may be triggered by steam, condensation, normal smoke, or fumes. Place away from heaters or air conditioning vents, windows, wall vents, etc. that can change the direction of airflow.
  • Ideally, there should be a smoke detector on every floor of the house; however, if you are only installing one smoke detector, the ideal location is on the top floor of the house outside of the bedrooms. 


Housing Dimensions
Weight with Batteries
Mounting Fastener
4.7 x 1.8 inches (12.0 x 4.6 centimeters)
7.36 ounces (210 grams)
#6 screws and anchors (provided)
Operating Temperature
Maximum Humidity
40°F to 100°F (4.4°C to 37.8°C), Long Term
15% to 95% non-condensing relative humidity
Sensor Specifications
Replacement Batteries
Transmitted Indications
Smoke Sensitivity
433.92 MHz
Two Panasonic CR123A
Low Battery, Supervision
85 dBA at 10 feet (3m) minimum
1.82% to 2.92% OBS/Foot