The TM27SV is one of Gladermatic Roller Door Operators. Coding is composed of 9 dip switches with three positions (+,0 and -) that is named Trinary.
It is compatible with Glidermatic De Luxe GTX-M27 . Also compatible with sliding gate opener Model GTX M27G. Both models have the same maker , same frequency, and same Trinary coding system.
Please pay attention that this garage door remote has the same (or similar) cover of the garage door remote GTXU1, GTXU2. However TM-27 is totally different from and not compatible with GTXU,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.