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Python 990 Responder SST PS990 (p/n 5301P) ** AUTOMATIC FREE UPGRADE TO VIPER 5900 **

2-way LCD Pager Remote Start Car Alarm with 1 Mile Range!


Good news and a little bad...

This item has been discontinued

But you may be interested in the newest model that's available.

5702p thumbnail

Python 991 (p/n 5702P)

OUR PRICE: $199.99

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** The Python 990 alarm system is now discontinued. We have an automatic free upgrade to the Viper 5900 which is the same alarm system by Directed Electronics, only labeled "Viper". The reason we have left this alarm online is because the Viper 5900, Clifford Matrix 50.5X and the Python 990 alarm system are the same. If you do not want the upgrade, please do not order this alarm. **
The new 1-mile range 990 Responder SST System from Python is the most advanced 2-Way Security and Remote Start system in the world! The new 990 employs Spread Spectrum Technology, digital frequency hopping and multiple frequency transmission to assure that even if a frequency is blocked, the signal still will go through. The Responder SST also has dual error correction systems to combat signal data corruption and minimize any signal interference. The end result is an amazing range of up to one full mile!

The interactive display on the Responder 2-way remote confirms all commands (almost instantly) with simple to comprehend icons and text. The remote alerts users to security system triggers by beeping or vibrating when out of audible range of the siren. The Python 990 will also start your vehicle with the push of a button (when remote start is installed), and you'll get confirmation back that the vehicle has been started.

Key Features:

  • Flagship 2-Way Security System / Remote Start System with Responder SST Technology
  • 6 channel remote start/security/keyless entry system
  • Confirms commands and system triggers on the transceiver LCD screen
  • Same alarm as Viper 5900 and Clifford Matrix 50.5X, but labeled "Python"
  • Clone-Safe® Code-Hopping®
  • Parking Light Flash
  • Failsafe® Starter Kill
  • Anti-Grind
  • Stinger® DoubleGuard® Shock Sensor
  • Revenger® Six-Tone Siren
  • Bright Blue LED Status Indicator
  • Miniature XCRS (Extreme Capacity Relay Satellite)
  • Defroster Output
  • Built-in Turbo Timer
  • Dome Light Supervision
  • Comfort Closure
  • 4 Auxiliary Outputs
  • Horn Honk
  • Includes One 2-way Responder SST Transceiver Remote
  • VS990
  • Part #: 5301P
  • 1-year warranty

Product History:

Python 574 thumbnail
(newest, current model)
Python 991 thumbnail
(previous model, replaced by Python 574 Responder LC3 (P/N# 5704p))
Python PYTHON-990 thumbnail
(previous model, replaced by Python 991 (p/n 5702P))

General Features

Remote Start
If the alarm or remote start module has "Yes" for this value then the system has an electronic device that allows you to start your vehicle by remote control without actually being inside the vehicle or using the key. The remote start system supplies the vehicle with power and simulates a start just as if you were inside using the key. Select vehicles require additional accessories or immobilizer/bypass modules to use the remote start feature.
Keyless Entry
Keyless entry allows you to remotely lock, unlock, and open the trunk of a vehicle if that is equipped with power door lock motors (actuators) and power truck motor (solenoid). Door lock controls via the remote are found on nearly all of today's car alarms.
2-way Paging
Alarms with 2-way paging inform the user via remote vibrating/audible/visual alert when the alarm is triggered. The pager must be within range to receive the transmitted signal.
Number of Remotes
The number of remotes included with the alarm system purchase.
Number of Buttons on Primary Remote
The amount of buttons on the Primary Remote generally equals the number of functions that you can use your remote for. Some remotes have auxiliary buttons which can perform more than one task per button.
LED/Display Color
The color of the LED indicator(s) on various items such as button-only car alarm transmitters, various chargers, cell phone accessories and other products.

For OLED or LCD car alarm remotes/transmitters the display color refers to the color(s) of the screen.
Number of Auxiliary Outputs
The number of auxilary outputs that the car alarm system supports. These outputs are left over from the total number of channels. They can be used to add on other options or additional features to a vehicle.
PC Programmable
Custom, advanced programming options through one or more of the following: PC, Pocket PC, PALM Pilot, Valet SW or Remote Transmitter allows for advanced controls of your alarm's functions.

Convenient Features

Panic Mode
Panic mode allow the user to be able to set off the alarm from the remote.
Trunk Release
The trunk release option allows for integration and control of the trunk latch. Additional parts may be required.
Valet Mode
Valet mode is a car alarm setting that adjusts system to less sensitive settings when allowing a valet to park your car and similar settings.

Alarm Features

Paging Range
The maximum distance that the car alarm system will work with the wireless remotes.
1 Mile
Number of Car Alarm Channels
The total number of channels that the car alarm system supports. These channels can include locking and unlocking doors, opening the trunk, remote start, and many other options.
Most car alarms come with a siren that can be installed. The siren will sound when the car alarm is triggered the alarm goes off.
Shock Sensor
The shock sensor is designed to trigger an alarm on light or heavy impacts and vibrations (standard sensor included with most alarms).

A dual zone shock sensor is a feature of proximity and shock sensors only. Zone 1 ( light impact on shock sensor and short motions(adjustable) on proximity sensor) will trigger warn away chirp to warn intruder that car has an alarm without setting off the full alarm. Zone 2 (heavy impact on shock sensor and extended motions(adjustable) on proximity sensor) will trigger the alarm to “go off”.


Two-Way Paging Features

Interior Thermometer
Some of the higher end car alarm systems are able to detect the temperature of the cabin. The temperature can then be displayed on the remote.

Remote Start Features

Cold Start Timer
Great for those on a set schedule who need their vehicle to warm up at a specific time every morning for example.
Turbo Timer
Some remote start systems have turbo timer feature which allows the vehicle to run for a specified amount of time after exiting vehicle. In turbocharged vehicles this prevents hot oil in the engine from choking up in the lines. Hard driving can raise engine oil temperatures to dangerously high levels. Proper cool down is essential for a healthy turbo and engine.

Warranty and Return Policy

Parts Warranty Duration
Not warranted
Labor Warranty Duration
Not warranted
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating



Florissant, MO


Great Alarm

January 27, 2009

DEI makes good alarms. This unit worked great, never had any problems; only thing I found was that the remote eats batteries really fast, probably changed it out every 3 weeks or so. Which is one of the issues they addressed with the 991.

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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Python 990 Responder SST PS990 (p/n 5301P) ** AUTOMATIC FREE UPGRADE TO VIPER 5900 **