DSR-TH Temperature Measuring range: -30-70 C Accuracy: +-0.5 C Resolution: 0.1 C/F Humidity Measuring range: 0~100%RH Accuracy: +-3%RH(10%~85%,23 C+-2 C),+-5% other range Resolution: 1%RH General Memory size: 10,918[A]/21,840[B],180,220[C],360,440[D] units Alarm: LED, beep Logging interval:2s~24h PC interface: RS232/485(R)/USB(U)/LAN(L)/Wireless(W/B/Z/F) Power: 3.6V Li-ion battery *1 Dimensions: 123*117*33mm Weight: 260g LCD display: 66*42mm