Set 3: 868 MHz, consists of base 0572 0121 incl. GSM module for SMS alarm, antenna with magnetic base 0554 0524, 5 NTC radio probes with display 0572 1120, amplifier 0572 0119, 2 power supply units for base and amplifier 0554 1096 and SBE software 0572 0180 incl. USB cable