In the prototype
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Scenario · testo Smart app · CO/CO₂ Ambient (CMDDA1)
Checking CO and CO₂ in a house with five rooms
A gas engineer has to measure the CO and CO₂ concentration in every room of a house. He brings four testo probes and his smartphone with the testo Smart app. This walkthrough follows him through the app's CO/CO₂ Ambient (CMDDA1) measuring program, screen by screen, and shows where his probes are in the house at every moment.
The equipment: four probes, used as two pairs
CO and CO₂ are always measured together, so each room gets one CO probe and one CO₂ probe. With two pairs, the engineer can measure two rooms at the same time.
ASet A
BSet B
All four probes are connected to the testo Smart app over Bluetooth. The app refers to each probe by the last three digits of its serial number.
The house: five rooms
Living room, Bedroom, Kitchen, Bathroom and Hallway. Every room is measured for 15 minutes, and the app reports the average CO and CO₂ value for it.
The plan: three rounds of 15 minutes
Two probe pairs and five rooms mean three measuring rounds. Between rounds, the engineer carries the probes to the next rooms.
- Configure the programAdd the second probe set, create the five rooms as measurement sites, and set alarm limits: CO warning 10 ppm, alarm 25 ppm; CO₂ warning 1,200 ppm, alarm 2,000 ppm.
- Round 1: Living room and BedroomSet A in the Living room, set B in the Bedroom.
- Round 2: Kitchen and BathroomSet B moves to the Kitchen, set A to the Bathroom.
- Round 3: HallwaySet A moves to the Hallway; set B is not needed.
- Save and reportSave the measurement, then export it as JSON or CSV, or create a PDF report.
How to use this walkthrough
- On the left is the clickable app prototype. Click through it, or use Back and Next above it.
- On the right, the house plan shows where each probe set is, and the explanation describes the current screen.
- “In the prototype” tells you what to tap next. Orange steps happen in the house, away from the app.
48 steps, from configuration to the PDF report.