6AG1011-1AC00-1AA0 - SIPLUS GSM-KIT TC35IT: GSM MODEM TC35I TERMINAL WITH MAGNETIC BASE ANTENNA, POWER CABLE APPROX. 1.5M AND ANTENNA CABLE APPROX. 2.5M; DATA ADAPTER FOR DIN RAIL MOUNTING (siemens) - Quad Industry
TC35i GSM/GPRS MODEM From Rosyguo, $50.26 | DHgate.Com
SainSmart NEW GSM TC35I SMS Module Board for SIEMENS – SainSmart.com