... to +60°C, 10% to 90%RHCommunication modeRF wireless and RS232 serial cableDisplay contentsTime, date, temperature, humidity ... system provided ,front maintenance ,PC wired or wireless control ,friendly and knowledge staff ready to help ... Accessories ship with cross which are:1 X RF (radio frequency) USB transmitter with antenna.1 ... used to lock and unlock the cross controller box.5 X pieces of LED for ...