RelAir R2M

Wireless M-Bus to M-Bus gateway for more than 60 meters.

Wireless M-Bus according to EN 13757-4 Mode S, T und C
Frequency 868 MHz
OMS conform and compatible (Spec 4.X.X)
supports M-Bus application layer acc. to EN13757-3, not DLMS / SML
Optional encryption Mode 5 or 7, AES
Power supply via M-Bus (6 unit loads) or USB
Whitelist with up to 63 meters configurable
Configuration with free Software via M-Bus or USB
Internal antenna, optional external antenne (only ProX-Version)
2 housing variations Home, Professional

The RelAir R2M allows you to integrate up to 63 Wireless M-Bus meters into your existing M-Bus installation. For this purpose the OMS-compliant gateway stores the meterdata and answers a request by the M-Bus master with the last answer telegram. Because of the configurable whitelist it is of course possible to run several RelAir R2M in one M-Bus network. Due to the integrated mini USB interface the RelAir R2M can also be used as a full operational Wireless M-Bus Master. Our new gateway works without an external power supply and is either powerd from the M-Bus (6 unit loads) or via the USB interface.

Technical Data

Standards	EN13757-4, EN13757-3 and EN13757-2, compatible to OMS
Receive modes	S1,T1,C1 (unidirectional) / Frame Format A and B
Application layer	M-Bus acc. to EN13757-3 / not DLMS, SML
Encryption	Mode 0 (no encryption), Mode 5 or Mode 7
Radio Scan List	up to 488 devices
Whitelist	up to 63 devices, can be configured
Power supply	from M-Bus (6 unit loads) or operation via USB (max.90mA)
Temperature range	0 to 40°C (Pro/ProX), 0 to 55°C (Home)
Humidity	10% to 70% (not condensing)
Housing RelAir R2M PRO
Mounting	Wall mounting
Material	Polystyrene, light grey
B x L x H	93 x 93 x 55 mm
Protection class	IP54, IP65 is possible if the cable entry is done carefully
Housing RelAir R2M HOME
Mounting	Wall mounting or mounting on an in-wall box (60mm)
Material	ABS, white
B x L x H	80 x 80 x 25
Protection class	IP40

Downloads

Ordering information

Ordering number	Description
RelAir R2M HOME	Wireless M-Bus to M-Bus Gateway, housing for living rooms, internal antenna
RelAir R2M PRO	Wireless M-Bus to M-Bus Gateway, industrial housing, internal antenna
RelAir R2M PROX	Wireless M-Bus to M-Bus Gateway, industrial housing, SMA socket for external antenna (not included)
KA004	USB-cable A to mini B 5-pin, length = 1,8 m
ANT WMB001	Magnetic mount antenna 868 MHz with 1,5m cable for Wireless M-Bus, SMA male connector
ANT WMB002	Wall mountable antenna 868 MHz with 1,5m cable for Wireless M-Bus, SMA male connector, IP66 waterproof