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

1. Formaldehyde measuring
2. Ambient temperature measuring
3. Ambient humidity measuring
4. Resolution
5. Max. display
6. Backlight
7. Low battery indication
8. Storage temperature and humidity

9. 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

10.