When connected through External Bluetooth device transmit data to Smart phone / Tablet / PC using iOS APPS / Android APPS / PC software
Features :

Wireless Connectivity Formaldehyde + Thermo-Hygrometer
Specifications	Model No.
Require external wireless module	MS-WFD
Operating voltage: 4.5V
Operating current: ＜150mA
Standby current: ＜10uA
Formaldehyde measuring range: HCHO: 0.000~3.000PPM (0.000~4.020mg/m3) TVOC: 0.000~3.000PPM (0.000~10.461mg/m3) Over range display 'Hi'
Ambient temperature measuring range and accuracy: -40.0℃ (-40.0℉) ~ 0.0℃ (32.0℉) / 0.0℃ (32.0℉) ~ 70.0℃ (158.0℉) (±0.2℃(0.4℉) 70.0℃ (158.0℉) ~ 100.0℃ (212.0℉) (±0.5℃(0.9℉)
Ambient humidity measuring range and accuracy: 0% ~ 20%RH / 80% ~ 100%RH (±5%RH @25.0℃ (77.0℉)) 20% ~ 80%RH (±3%RH @25.0℃ (77.0℉))
Resolution: 0.001PPM / mg/m3; (temperature) 0.1℃ / ℉; (Humidity) 1%RH
Max display
Backlight ON/ OFF selectable
Low battery indication : < 2.8V
Storage temperature and humidity: 0℃ (32℉) ~ 60℃(140℉) / ＜80%RH
Monitoring anytime and even ＞10 meters away (point to point)
Standalone mode (without external wireless module)
Wireless connectivity transmit data to smart phone / tablet with iOS APPS or Android APPS (require MS-WMB1 external wireless module, sold separately)
Battery powered: 3 × 1.5V "AAA " (R03/LR03)
Dimensions (L × W × D)mm: 105 × 54 × 43
Weight (approx.)grams ( without battery ) : 82