The RTH2 is a professional standalone PSTN receiver designed to bridge the gap between traditional telephone-based alarm systems and modern digital monitoring software. It reliably captures event reports from security control panels via both tonal (DTMF) and pulse telephone lines, processes the data, and forwards it instantly to the monitoring station via a standard RS232 interface. With its integrated wide-range power supply and robust design, the RTH2 is an essential infrastructure component for any CMS still supporting legacy landline connections.
Maximum reception versatility. Supports both tonal (DTMF) and pulse communication channels, ensuring a reliable link with any security panel, regardless of its age or dialing technology.
Advanced decoding engine compatible with industry-standard formats: Contact ID, SIA, Ademco Express 4+2, and others. Provides full transparency for all received alarm events.
Features a built-in wide-range power supply (100–240 V AC). Eliminates the need for external power bricks, simplifying installation and increasing system reliability in server room environments.
Equipped with a dedicated DB9 RS232 data output port. Ensures "plug-and-play" compatibility with all major monitoring software packages that support standard receiver protocols.
Primary input: Standard analogue PSTN telephone lines.
Real-time signal detection and high-precision decoding for zero data loss.
Automatic handshake generation to match the calling panel’s required protocol.
Rapid processing cycles to handle high traffic volumes during peak alarm periods.
Fully compatible with Contact ID (the world’s most popular reporting format).
Robust support for SIA and Ademco Express 4+2.
Ability to decode various legacy pulse formats used in older installations.
Seamlessly converts analogue signals into structured digital messages for the CMS software.
Dimensions: 225 x 235 x 115 mm – a sturdy standalone unit for desktop or shelf placement.
Weight: 1.21 kg (including cables), featuring high-quality internal shielding.
Operating temperature range: from 0°C to +55°C.
Front-panel status indicators for visual confirmation of power and data activity.
Wide input voltage range: 100 – 240 V AC (50 / 60 Hz).
Direct 1 x DB9 serial port connection for stable data forwarding to the PC.
Designed for 24/7 continuous operation in mission-critical environments.
High electrical isolation on the telephone line input for protection against surges.
| Communication channel | telephone lines- tonal or pulse, PSTN |
| Receiving formats | contact ID, SIA, Ademco Express 4+2 and others |
| Primary power supply | 100 – 240 V (50 / 60 Hz) AC network |
| RS232 data output ports | 1 x DB9 |
| Operating temperature | From 0°C, to +55°C |
| Dimensions | 225 x 235 x 115 mm |
| Weight | 1.21kg, with cables |
Product Resources
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