This TM-27 (TM27) is used to control Gladermatic Roller Door Operators. The coding is set by the combination of 9 dip switches inside the remote each with three positions (+, 0 and -), which is called Trinary coding.
It is compatible with Glidermatic De Luxe GTX-M27 as well as model GTX-M27G, both have the same manufacturer, the same working frequency and the same Trinary coding system.
Sun visor pack available TM27SV .
Please pay attention that this garage door remote has the same (or similar) cover of the remote GTXU1, GTXU2. TM-27 is totally different from GTXU! and GTXU2 abd are not compatible with GTXU1 and GTXU2. TM-27 has text at the back of the transmitter (refer to the photo).
GTXU1, GTXU2 use 6 volts batteries. TM-27 uses 12 volts baterry.