DSC Impassa Self-Contained 2-Way Wireless Security System

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IMPASSA is the newest, next generation wireless security system from DSC. IMPASSA comes with the defense and offense needed to protect the 'king' - the home and homeowner.
Brand: DSC
Part Number: KIT457-12

Availability: More than 5 in stock

Ships tomorrow if ordered within
16 hrs and 49 mins!




The KIT457-12 - DSC Impassa Self-Contained 2-Way Wireless Security System brings wireless capabilities to a whole new level. That's because the KIT457-12 can incorporate easily DSC's popular WT5500 2-way wireless wire-free keypad and other integral wireless DSC alarm accessories for optimal protection. The Impassa is the newest, next generation wireless security system from DSC. It not only reduces the time spent during the tedious typical enrollment process found quite often with alarm systems, but opens the door to convenient wireless control over you property's security.

Distributed Wireless System
Because KIT457-12 is a distributed wireless system, installers have the flexibility of positioning the panel away from the premise's entry point. This allows for the installation of the WT5500 2-way wireless wire-free keypad near the entry point so that even if the premise is compromised, the main unit (the Impassa panel) cannot be located by the intruder and tampered with. For additional protection, home and business owners can install 2-way wireless sirens.

2-Way Audio Communication
Impassa delivers 2-way audio (VOX only or VOX and push-to-talk) alarm communication with the central monitoring station during alarm events. With high-quality speakers and microphones, homeowners can easily talk directly to the central monitoring station.

Easy Enrollment
With only wires needed for AC power and the phone line, homeowners and installers drill much fewer holes and pull much fewer wires. Installers should easily confirm Electronic Serial Numbers (ESN), zone numbers and zone type through a series of user-friendly screens. In addition, Impassa's template programming feature allows installers to quickly program basic functions by just entering a 4-digit code. Codes exist for pre-defined zone definitions, reporting code formats, communication call directions and DLS setup. Finally, the installer enters the monitoring station telephone number and account code, DLS access code, entry / exit delays and installer code.


  • Built-in 2-way audio VOX and push to- talk alarm communication
  • 2-way wireless support-- 4 keypad-- 4 sirens-- 8 wireless keys
  • Supports 64 wireless zones and 8 wireless keys (without using a zone slot)
  • Easy wireless device enrollment process
  • Template programming
  • Full 32-character programmable labels
  • 5 programmable function keys
  • Individual FAP keys
  • 17 user access codes
  • 500 event buffer
  • False alarm reduction features (CP-01)
  • Enlarged keypad buttons
  • Outdoor temperature display

Additional Info

Additional Info

Part Number KIT457-12
What's in the box (1) SCW9050 2-Way Wireless Keypad
(1) WS4904 Wireless PIR
(3) WS4945 Wireless Door Contact
(1) WS4939 Wireless Keyfob
(1) Phone Jack/2ft Cord
(1) Backup Battery
(1) Installation Guide
(1) User Guide
(1) Mounting Hardware


As with all DSC products I've ever messed with, the system is ...Review by name withheld
As with all DSC products I've ever messed with, the system is very easy to install. It's a good kit for someone needing a wireless system. This is one of those systems where the controller/keypad is one unit. The "item includes" might lead you to believe there is a wireless keypad. There is not. (Posted on 8/18/12)
I absolutely love this system. Installation was easy and quick! ...Review by Austin
I absolutely love this system. Installation was easy and quick! Programming was a breeze - and the system is able to be customized far more than I had imagined. The system is extremely reliable and extendable with additional accessories. Motion Detector included doesn't specify (as far as I saw online) whether it is pet friendly (WS4904P), but it IS. With 3 cats running around, the motion detector does not trigger an alarm, however as soon as I step foot into the same area - it goes off as it should. I would definitely recommend this system to anyone! (newbie or experienced user) (Posted on 8/15/12)

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Dimensions 8.93" x 5.51" x 1.65"
227mm (L) x 140mm (W) x 42mm (D)
Current Draw 425 mA
Power Supply 16.5 VAC/20 VA @ 50/60 Hz
Aux+ Output 12.0-12.5 VDC/100 mA
Battery Backup 24 hr Backup
Operating Environment 32° to 120° F (0° to 49° C)
Relative Humidity 5% to 93%
Zone Count 34
Access Codes 17