The WiFi spec for the cMT-SVR-200 series is IEEE 802.11 b/g/n.

802.11b/g has a range up to 150 feet (can be affected by building materials).

802.11n has a range of up to 175 feet (can be affected by building materials).

So the range depends on whether the receiver uses b, g, or n.

So to be safe, the receiver should be located in the range of 150 to 175 feet of the cMT-SVR (but the range can be affected by the building materials used).