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WT4901 - DSC Wireless 2-Way Indoor Alarm Siren

WT4901 - DSC Wireless 2-Way Indoor Alarm Siren
WT4901 - DSC Wireless 2-Way Indoor Alarm Siren
Item# WT4901

Please Note: The DSC WT4901 wireless 2-way indoor alarm siren has been discontinued without replacement.

DSC WT4901 Product Description:


The DSC WT4901 wireless indoor siren is a fully two-way supervised wireless siren designed to work with the compatible DSC 433 MHz control panels (e.g. Impassa SCW9057). With its sleek and modern design, the WT4901 will fit most decors without being obtrusive to the home environment. Since the alarm control panel is usually mounted in a secure (but sometimes remote) location within the home, audible indications, the onboard siren, regarding alarm triggers or smoke/fire detection may by quieter than what the WT4901 can provide. An indoor siren alert occupants of the potential danger before a person moves too far into the home. With its powerful sounder, the WT4901 will annunciate these issues from its remote location but will not indicate the location of the alarm control panel. The WT4901 also distinguishes between burglar and fire alarms by emitting different sounds for each and indicates entry/exit delays, trouble beeps and multiple different door chimes.

The WT4901 indoor siren offers 2-way wireless and continuously supervised communication with any compatible 433 MHz wireless alarm panel. If the WT4901 is tampered with, the compatible alarm control panel will immediately be signaled and the appropriate transmission will instantly be transmitted to the GeoArm central alarm monitoring station.

We recommend installing the wireless alarm panel in a remote location to keep it secure from intruders. By hiding the alarm panel you minimize the effectiveness of the onboard alarm siren. Therefore, we recommend installing at least one WT4901 wireless indoor siren so that you still have a loud audible warning of any alarm event that will sound throughout the home. The intruder will hear the siren and potentially attempt to disable it, thinking that the siren is the actual alarm panel. Meanwhile, the true alarm panel is still safely hidden and able to send out the alarm signal to the GeoArm central alarm monitoring station.

Product Features:

  • Siren sounds for alarms, door chimes, entry/exit delays and trouble indications
  • Siren output is 85dB
  • Onboard test button
  • Transmits RF status, low battery and tamper condition
  • Case and wall tamper
  • Reliable 433 MHz technology
  • Backed by DSC's 1-year limited manufacturer's warranty

DSC WT4901 Product Specifications:


  • Dimensions: 3.3" × 5" × 1.1" in (84 mm × 127 mm × 29 mm)
  • Weight: 7.76 oz (220 g)
  • Frequency: 433 MHz
  • Output: 85dB
  • Battery Type: 4 AA batteries
  • Battery Life: 1 year (typical usage)
  • Wireless Range: 984ft (300m) Nominal Open Air
  • Operating Temperature: 32°F to 122°F (0°C to 50°C)
  • Relative Humidity: 90% RH transmitter only
  • Compatible control panels: PC9155-433/868, PC9155D-433/868, PC9155G-433/868

DSC WT4901 Product Includes:


  • WT4901 Alarm Siren
  • Installation sheet
  • Hardware pack (3 screws and 3 plastic anchors)
  • 4 AA batteries

DSC WT4901 Product Compatibility:


  • DSC Alexor System
  • DSC Impassa
  • PowerSeries Wireless Receivers (RF5132-433/PC5132-433 all versions and RF5108-433)
  • MAXSYS® Wireless Receiver (PC4164-433)
  • PowerSeries RFK Keypads (RFK5500/RFK5501/RFK5516/RFK5508)
  • PowerSeries 9045/9047 Self-Contained Wireless Panel
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