Gentex 9120 120VAC Continuous Piezo Sounder Photoelectric Smoke Alarm

  • MPN: 9120
  • JMAC ID: 200088318
$46.69
JMAC_ID:
200088318
df_manual_boost:
1.75
Please Note: In order to keep our prices low, we have a minimum order requirement of $99
The Gentex 9120 120VAC Photoelectric Smoke Alarm is designed to eliminate nuisance alarms in apartments, homes, hospitals, hotels, and motels. It is capable of interconnecting with up to 12 other units, and features a horn frequency of 3100Hz, a three position test switch, and a quick disconnect wiring harness.

This smoke alarm is built with a 90dBA continuous piezo horn, a pulsing LED sensing chamber, and is insect proof. Relays run on battery backup power and a dust cover protects against contamination. Equipped with a low/missing battery indicator, this smoke alarm is covered by a one year warranty from the date of purchase.

UPC: 700217008713
Also known as: GN-9120

Technical Specifications:
  • Secondary Power Source: Alkaline 9VDC battery
  • Nominal Sensitivity: 2.5 percent obscuration
  • Alarm Horn Rating: 90dBA at 10ft.
  • Operating Ambient Temperature Range: 40F to 100F
  • Operating Relay Current: .070amp
  • Operating Current: .045amp
  • Operating Voltage: 120VAC, 60Hz
  • Depth: 2.625"
  • Diameter: 6.5" OA (5.75" at ceiling)
  • "H" Isolated Thermal Form A (Self-Restoring): 135F at 50ft.
  • "T" Integral Thermal (Self-Restoring): 135F at 50ft.
  • "F" Auxiliary Relay: 1 Form A and one Form C (0.6 amp)


For more information about the Gentex 9120, please contact us.
  • Easy WashTM on-site maintenance washing program
  • Interconnect with all Gentex tandem capable smoke alarms
  • Fully insect screened
  • Nominal 2.5% sensitivity
  • 90dBA continuous piezo horn (9120/9220 Series)
  • Quick-disconnect wiring harness
  • Horn frequency 3100 Hz (nominal)
  • Available in 120VAC and 220VAC with 9VDC battery back-up
  • Mounting hardware adapts to standard junction boxes
  • Dust cover to prevent contamination during installation
  • Pulsing LED sensing chamber
  • 5-to-1 signal-to-noise ratio
  • 90dBA temporal 3 evacuation piezo horn (9123/9223 Series)
  • Low or missing battery indicator
  • 1 year warranty from date of purchase
  • Relays operate on battery back-up
  • Patented three position test switch
  • Red LED pulses every 30 seconds, green LED for AC power on

2 Reviews

  • 5
    GENTEX-9120

    Posted by 171174 on Jun 2nd 2021

  • 5
    GENTEX-9120

    Posted by 140227 on Apr 8th 2019

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