Thank you for selecting this Oregon ScientificTM Wireless Indoor / Outdoor Thermometer with Indoor Humidity and Self- Setting Atomic clock ( RMR383HGA). View and Download Oregon Scientific RMR803A user manual online. This clock is supplied with a remote sensor ( THN132N) and can support up to 3 sensors in total ( additional sensors sold separately). Page 1 Thank you for selecting this Oregon Scientific Wireless Indoor / Outdoor Thermometer with Indoor Humidity and Self- Setting Atomic clock ( RMR683HGA). NOTE Please keep this manual handy as you use your new. Hereby, Oregon Scientific, declares that this Indoor and Outdoor Thermometer with Atomic Time ( Model: RMR202 / RMR202A) is in compliance with the essential requirements and other relevant provisions of Directive 1999/ 5/ EC.A copy of the signed and dated Declaration of Conformity is available on request via our Oregon Scientiﬁc Customer Service. RMR803A Thermometer pdf manual download.