Hartcran House, 231 Kenton Lane, Harrow, Middlesex, HA3 8RP, England
Tel: +44 (0) 20 8909 9595, Fax: +44 (0) 20 8909 2233, www.radiometrix.com
SAR3
PRELIMINARY
Issue 1, 1 September 2009
Multi channel UHF FM Class 1 Social Alarm Receiver
The SAR3 is a miniature PCB mounting UHF
radio data receiver. It is a narrowband 25KHz
spacing receiver incorporating a received
signal strength indicator (RSSI) and 4 channel
capability. It allows the simple implementation
of data links at speeds up to 8kbps.
Figure 1: SAR3-869-8
Available for operation in European 868MHz band, the SAR3 combines full screening with internal filtering to
ensure EMC compliance by minimising spurious radiation and susceptibility. The module suits one-to-one
and multi-node wireless links in applications including automatic meter reading (AMR), car and building
security, Social alarms, EPOS and inventory tracking and remote industrial process monitoring.
Features
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Designed to comply with harmonised radio standard EN 300 220-3
Designed to comply with harmonised EMC standard EN 301 489-3
Class 1 performance (as per EN 300-220 V2.3.1)
Data rates up to 8kbps
4 pre programmed 869MHz band social alarm frequencies as standard
Versions available on any frequency from 868 to 869MHz
Fully screened
4 channel selectable
Technical Summary
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Double conversion FM superhet
SAW front end filter gives >65dB image rejection
Operation from 4V to 16V @ 46mA typical
Built-in regulator for improved stability and supply noise rejection
-115dBm sensitivity @ 1ppm BER
RSSI output with 65dB range
Radiometrix Ltd
SAR3 Data Sheet
page 1
RADIOMETRIX [ RADIOMETRIX LTD ]
