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Testo Smart Probes
Page 15 last saved: 2021-12-31
Key is use for start ,stop and hold value.
Led is use for indicate status of device.
Red : warning, such as low battery level
Yellow: finding App in smart phone via Bluetooth
Green: communication success.
4.7 testo 115i operation principle
testo 605i has a NTC sensor in clamp, which shall change resistant value related surface
temperature. Circuit is response for detect NTC’s resistant and calculate surface temperature of
pipe, which clamp catch, through NTC’s feature by MCU.
Then MCU control the Bluetooth module to send data to smart phone via Bluetooth and also
received parameter changed and action protocol from smart phone.
Key is use for start ,stop and hold value.
Led is use for indicate status of device.
Red : warning, such as low battery level
Yellow: finding App in smart phone via Bluetooth
Green: communication success.
4.8 testo 905i operation principle
testo 905i has a TC sensor, which shall change electronic capability value related ambient
temperature. Circuit is response for detect TC’s capability and calculate ambient temperature in
air through TC’s feature by MCU.
Then MCU control the Bluetooth module to send data to smart phone via Bluetooth and also
received parameter changed and action protocol from smart phone.
Key is use for start ,stop and hold value.
Led is use for indicate status of device.
Red : warning, such as low battery level
Yellow: finding App in smart phone via Bluetooth
Green: communication success.