Universal Wireless Cellular Alarm Communicator with GPRS Data Routing An industrial-grade, heavy-duty universal cellular telemetry interface engineered to supply fail-safe primary or backup wireless alarm transmission paths to central monitoring stations. Compatible with any control panel utilizing the industry-standard Contact ID format, this self-contained communicator features 4 on-board inputs, 4 programmable open-collector outputs, an integrated SMS dialer framework, and seamless dynamic routing to protect critical data links against accidental or malicious physical phone line cuts.
Resilient Wireless Telemetry Infrastructure for Critical Alarm Routing
A primary point of vulnerability in legacy commercial security arrays is the physical wire trunk supplying the landline telephone link. If an intruder cuts these lines prior to entry, or if an atmospheric storm takes down local utility poles, standard alarm systems become completely isolated from central tracking desks. The DSC GS3055 / G571 series is engineered as an industrial-grade antidote to physical line sabotage, establishing an immutable wireless transmission bridge over local cellular networks.
Housed inside a compact, secure steel enclosure with an integrated signal-strength LED diagnostic block, the communicator works by constantly supervising the integrity of the landline connection. The moment it detects a drop in line voltage or a communication bottleneck, it seamlessly swaps the system's transmission track to the cellular network without dropping a single packet. Leveraging high-efficiency GPRS data channels, it packages and pushes complete Contact ID event telemetry instantly to Sur-Gard central station line cards, guaranteeing uninterrupted situational awareness during critical duress or intrusion alerts.
Key Performance Features
Universal Contact ID Compatibility: Functions seamlessly as a plug-and-play link with almost any modern or legacy alarm panel that natively communicates using standard Contact ID formatting, bypassing the need to replace existing control panels.
Intelligent Line-Cut Supervision: Constantly checks the hardwired telephone circuit (PSTN). If the hardwired line is physically cut, tampered with, or suffers a carrier brownout, the unit automatically switches all data traffic to cellular bands within seconds.
On-Board Zone Input & Output Terminals: Outfitted with 4 fully programmable dry-contact inputs and 4 programmable open-collector outputs. This architecture allows the device to operate as a completely standalone communicator for direct panic buttons or environmental sensors.
Integrated SMS Text Dialer Engine: Configurable to broadcast up to 13 distinct pre-written alphanumeric text messages to 8 separate mobile phone numbers, providing on-call security managers with instant, off-site notification of precise system faults or alarm triggers.
High-Speed GPRS Packet Routing: Utilizes cell network data layers to feed encrypted IP packets directly into Sur-Gard System I, II, III, IV, or 5 monitoring station receivers, delivering much faster transmission times than standard cellular voice dialers.
Remote Command & Control Matrix: Supports specialized administrative incoming SMS text commands, allowing security teams to remotely toggle the on-board programmable outputs to trigger local strobe lights, trip siren relays, or execute a remote system reset.
4-Stage Visual LED Diagnostic Bar: Built with a clean, face-mounted array of green diagnostic LEDs that display real-time cell tower signal strength and network registration states, drastically simplifying initial installation alignment.
Ideal Infrastructure Applications
Commercial Retail & Cash Vault Outposts: Safeguarding high-value inventory hubs with an automated wireless transmission layer that cannot be disabled by clipping exterior utility drops.
Remote Industrial Sub-Stations: Serving as a standalone wireless telemetry hub inside unstaffed infrastructure utility shacks, using the on-board inputs to track perimeter door contacts and temperature alarms over cellular frequencies.
Banking Lines & Duress Systems: Providing a clean, secondary backup transmission loop for silent under-counter panic arrays, meeting strict commercial insurance redundant-path requirements.
Technical Specifications Quick ReferenceSystem ParameterSpecification ProfilePrimary Transmission EngineDual-Band GSM / GPRS Telemetry ModuleSupported Frequency BandsModel Specific: 900 / 1800 MHz or 850 / 1900 MHzInterface Loop CompatibilityStandard 2-Wire Simulated PSTN Line InterfaceOn-Board Hardware I/O4 $\times$ Programmable Inputs / 4 $\times$ Open-Collector OutputsOperating Current Draw300 mA Peak Transmission CapacityStandby Power Supply Prerequisite13.8 V DC Regulated Input SourceDimensions (W x H x D)225 mm $\times$ 138 mm $\times$ 55 mmEnvironmental Temperature Threshold$+5^{\circ}\text{C}$ to $+40^{\circ}\text{C}$ ($41^{\circ}\text{F}$ to $104^{\circ}\text{F}$)What's Included in the System Setup
DSC Universal Wireless Cellular Communicator Module
Rigid Metal Enclosure with Integrated Grounding Tabs
High-Gain Direct-Mount Flexible Whip Antenna
Internal Module Interconnection Ribbon Cable Set
Technical Installation, Loop Wiring, and Programming Manual
Required for Field Integration: Activated SIM Card Subscription and 13.8V DC External Power Source (Sold Separately)