Technical data
SMART RELAY SREL, SREL.ZK, SREL.ADV 
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11.0  Smart Relay 2 
11.1  SMART RELAY 2 VERSIONS 
SREL2.G2.W: The SREL2 is basically used with transponders, i.e. as purely "active" 
components. There is also the option of using a Compact Reader and operating the 
SREL with Mifare Classic/DERFire
®
 cards. 
This relay provides a simple yes/no authorisation for a maximum of 64,000 different 
transponders. 
SREL2.G2.W.WP: As described above, but with a waterproof design. 
You must seal the bushing yourself under your own responsibility. It is recommended 
to use suitable materials such as silicon or another resistant
 sealing material. The 
housing features an IP65 design. 
SREL2.ZK.G2.W: The same as the basic version, but with the option of separately 
connectable access event logging for the last 1,024 accesses with date and time, or 
day – time zones for up to 100 user groups and automatic locking and unlocking 
(time-controlled switchover). This version can also be used as a gateway in a virtual 
network. 
SREL2.ZK.G2.W.WP: As described above, but with a waterproof design. 
You must seal the bushing yourself under your own responsibility. It is recommended 
to use suitable materials such as silicon or another resistant
 sealing material. The 
housing features an IP65 design. 
SREL2.ZK.MH.G2.W: As the ZK version above. Two external card readers 
(SC.M.E.G2) and an internal card reader (SC.M.I.G2) can be connected to this ver-
sion. Mifare Classic/DERFire
®
 cards can be used with this particular SREL2. 
SREL2.ZK.MH.G2.W.WP: As described above, but with a waterproof design. 
You must seal the bushing yourself under your own responsibility. It is recommended 
to use suitable materials such as silicon or another resistant
 sealing material. The 
housing features an IP65 design. 










