... Hence, it can directly work with humidity sensors, water level sensor, pressure transducers,flow sensors, smoke, gas, motion, shock and ... card socket built-in/optional accessory)specification Model: EXM-6DC-PT100-RIntegral GSM 850/900/1800/1900 modemSupply Voltage:12 ~ ... 24 VDCInputs:3 Channels PT100, tolerance:+/-0.5oC, temp range: -50oC- 200oCAnalog Input signal ...