Key Takeaways
- Scenario 153 is radon-mitigation / manometer commissioning MMS — not epoxy chips, crawlspace seams, attic baffles, garage-door springs, french drains, gutter guards, water-heater anodes, sump pits, window-film panes, channel letters, EV chargers, auto-gates, pool pads, FACP zones, solar strings, standby generators, utility-trim cuts, septic lids, HVAC stickers, irrigation valves, roof IR squares, elevator plaques, extinguisher tags, scaffold cards, meter dials, hazmat bags, LOTO, night keys, storm claims, or closeout selfies.
- A cropped manometer face and in-wc reading are the payload. Do not MMS basements, plates, or neighbor yards.
- Read MMS and “we commissioned” SMS must not share a radio with portal OTP or an “add a fan upgrade” blast.
- Priced by devices and SMS send volume. You use your own phone and operator SMS credit. Free is 1 / 300 / 300. Developer is 25,000 SMS per year.
- Operator MMS is usually dearer than SMS. Budget winter installs separately.
- REST attachment fields live in Developer Center — not a CodeCanyon radon add-on. MCP, if you use it, is only a REST wrapper.
Summary
Scenario 153 is field MMS for radon manometer commissioning. The tech owns the gauge. The Android sends a cropped face, not a basement tour. Priced by devices and SMS send volume. You use your own phone and operator SMS credit.
If you MMS the whole basement, you have shipped kids’ toys and a neighbor fence — and the homeowner will treat RN-3 as a privacy leak.
Radon manometer
Send the cropped gauge, not the room. MMS gateway · MMS attachments. Fields: Developer Center. Industry notes: GSMA.
Who sees the image
| Lane | Payload | SIM | Do not |
|---|---|---|---|
| Homeowner / read | Cropped gauge + RN tag | Transactional | Basement wide shots |
| Commissioned SMS | Job closed | Transactional | Bundle a fan-upgrade CTA |
| Fan upgrade | Promo | Promo MSISDN | Ride the MMS inbox |
| Portal login | OTP | Dedicated OTP phone | Share the tech radio |
Crop the gauge
Keep the file small; APN must stay live. Idempotent send. DLR ≠ homeowner opened the photo — DLR.
Cost
Priced by devices and SMS send volume. You use your own phone and operator SMS credit. Free: 1 device, 300 SMS lifetime, 300 contacts. Developer: 25,000 SMS per year. Paid plans uncap platform volume; devices still meter. Pricing.
Ops
Charge the tech radio before winter installs. Doze · setup.
Security
No plates, kids, or neighbor yards. Trust Center · OTP. Upgrade STOP off the MMS inbox. STOP.
Checklist
- Crop to manometer face.
- Idempotency on job + RN tag.
- OTP isolated.
- No basement tours.
- Airtime for winter week.
Next steps
Transactional SMS · SMS API documentation.
Related product pages
Jump to the live product docs for this topic—not another long-form article.
- MMS gateway on your own SIMMultimedia where supported
- two-way SMS inboxReplies on your SIM
- SMS API documentationLive endpoint reference
- device and SMS volume pricingPlans and allowances





