Check the listing for details. Onset HOBO MX1104 Bluetooth Analog, Humidity, Temperature and Light Data Logger. Condition: New. Listed at 219.00 USD. Onset HOBO MX1104 Bluetooth Analog, Humidity, Temperature and Light Data Logger Integrated Sensors for Temperature, Humidity and Light Measurements and External Port for Analog Sensor Wireless Transmission of Recorded Readings to Android, iPhone, iPad Devices Using Bluetooth Smart LE Communications -20°C to 70°C (Temp), 0% to 100% RH (Humidity) and 0 to 167,731 lux (Light) Measurement Ranges. (Analog is Dependant on External Sensor) (2) User-Replaceable AAA Alkaline Batteries with 1 Year Life (1 Minute Sampling Rate) Stores up to 1.9 Million Measured Readings with Date/Time Stamp if Bluetooth Communications Not Available Includes Command Strip, Double-Sided Tape, Hook & Loop Strap and (2) AAA Alkaline Batteries. HOBOconnect App Available on the Apple Store and the Google Play StoreOnset HOBO® MX1104 Bluetooth Analog, Humidity, Temperature and Light Data Logger Specifications Data Channels (1) Analog Channel (1) Humidity Channel (1) Temperature Channel (1) Light Channel Humidity Measurement Range: 1% to 100% at -20°C to 70°C (-4°F to 158°F) Accuracy: ±2.5% at 10% to 90% RH (typical) to a Maximum of ±3.5% including hysteresis at 25C (77F); below 10% and above 90%: ±5% (Typical) Resolution: 0.01% Response Time: 30 Seconds to 90% in Airflow of 1 m/s (2.2 mph) Drift: < 1% per year Temperature Measurement Range: -20°C to 70°C (-4°F to 158°F) Accuracy: ±0.20°C (±0.36°F) @ 0°C to 50°C Resolution: 0.002°C @ 25°C (0.004°F @ 77°F) Response Time: 11 Minutes in Airflow 1 m/s (2.2 mph) Drift: < 0.1°C (0.18°F) per year Light Measurement Range: 0 to 167,731 lux (15,582 lum/ft2) Accuracy: ±10% typical for Direct Sunlight Logger with SD-MA-420 or CABLE-4-20mA Measurement Range: 0 to 20.1 mA Accuracy: ±0.001 mA ±0.2% of Reading Resolution: 0.3 µA Logger with SD-VOLT-2.5 or CABLE-2.5-STEREO Measurement Range: 0 to 2.5 Volts Accuracy: ±0.1mV ±0.1% of Reading Resolution: 40 µV Logger with SD-VOLT-05 or CABLE-ADAP5 Measurement Range: 0 to 5.0 Volts Accuracy: ±0.2mV ±0.3% of Reading Resolution: 80 µV Logger with SD-VOLT-10 or CABLE-ADAP10 Measurement Range: 0 to 10 Volts Accuracy: ±0.4mV ±0.3% of Reading Resolution: 160 µV Logger with SD-VOLT-24 or CABLE-ADAP24 Measurement Range: 0 to 24 Volts Accuracy: ±1.0mV ±0.3% of Reading Resolution: 384 µV Data Storage Capacity 1.9 Million Recorded Readings Sampling Rate 1 Second to 18 Hours (User-Specified) Display Type: LCD Note: Display is Visible from 0°C to 50°C (32°F to 158°F) Display May React Slowly or Go Blank in Temperatures Outside this Range. Power Source (2) AAA 1.5 Volt Alkaline Batteries (User-Replaceable) Battery Life Bluetooth Always On: 1 Year typical @ 1 Minute Sampling Rate Bluetooth Always Off: 2 Years typical @ 1 Minute Sampling Rate Note: Dependant Upon Environment, Operating Range, Logging Interval, Remaining Connected with the App, Excessive Downloads and Paging May Impact Battery Life Time Accuracy ±1 Minute per Month @ 25°C Communications Type: Bluetooth Wireless Wireless Data Standard: Bluetooth Smart (Bluetooth Low Energy, Bluetooth 4.0) Transmission Range: Up to 30.5 Meters (100 ft) Line of Sight Radio Power: 1 mW (0 dBm) Logging Modes Fixed Interval (Normal, Statistics) or Burst Data Storage Modes Stop When Full or Wrap/Overwrite When Full (FIFO) Start Modes Immediately, Push Button, Date & Time or Next Interval Restart Mode Push Button Stop Modes When Data Storage Full, Push Button, Date & Time or After Set Interval Software HOBOconnect Software App for iOS or Android OS Compatibility Android Phones and Tablets iPhone, iPad, iPod Touch with iOS 7.1 or Later Bluetooth 4.0 or Later Operating Range Temperature: -20°C to 70°C (-4°F to 158°F) Humidity: 0 to 95% RH (non-condensing) Standards Compliance CE, IP54 Weight 123 grams (4.34 oz) Dimensions 11.28 cm x 5.41 cm x 2.92 cm (4.44" x 2.13" x 1.15")