ETSI EN 303 204 V2.1.0 (2015-07) - Network Based Short Range Devices (SRD); Radio equipment to be used in the 870 MHz to 876 MHz frequency range with power levels ranging up to 500 mW; Harmonised Standard covering the essential requirements of article 3.2

The present document applies to the following radio equipment types: 
1) Network Based SRDs which are SRDs intended to operate in association with other SRDs to form network topologies supporting the intended application. 
2) Network Relay Points which are specific Network Based SRDs supporting interconnection of a network of SRDs with an external network or service. 
The present document covers equipment intended for use in a fixed location, equipment normally fixed in a vehicle and equipment intended to be carried or attached. 
The present document contains requirements to demonstrate that radio equipment both effectively uses and supports the efficient use of radio spectrum in order to avoid harmful interference.