20260929-0011-air-hub-two-tier-ssd202d Split Air Hub into two SSD202D tiers with 433 MHz transmit and receive at a 50-60 USD entry price

• status: completed
• priority: P1
• owner: claude/session-20260928-2344
• createdAt: 2026-09-29 00:11

Description

The owner set the Air Hub retail target to 50-60 USD instead of 249 USD ("我们的网关不可以定金249， 定价50-60比较合理"). No RK3506J build meets the landed-cost cap that price implies, and CC1354P10 was dropped as more expensive and weaker than two separate radios. The owner accepted two tiers on SSD202D and chose EFR32MG21 (chip-down, not the Tuya ZS3L module) for the upper tier ("OK，我们用EFR32MG21方案"):

• entry tier: SSD202D + ESP32-C6 + CMT2300A
• upper tier: SSD202D + ESP32-C6 + EFR32MG21 + CMT2300A

433 MHz OOK transmit and receive replaces the Air Hub LR model ("如果首版考虑433 发射和接收呢？ 替换掉LR版本"). The ESP32-C6 Wi-Fi and BLE are configuration channels and the C6 keeps CAN ("c6的wifi和ble都是配置通道，can也保留").

Acceptance criteria:

1. Air Hub spec, design, guide, brief and evaluation describe the two tiers, their radios, CAN source, 433 transmit/receive rules, configuration channel and BOM against the new price.
2. Air Hub LR is withdrawn consistently across the line, product plan, open questions, compliance matrix and P12 Tag, with the Tag receiver question left open, not silently dropped.
3. Product plan §5 carries the new prices and landed-cost caps.
4. Quality gate passes: bun run docs:lint && bun run docs:build && git diff --check.

ActiveForm

Splitting Air Hub into two SSD202D tiers

Dependencies

• blocked by: (none)
• blocks: (none)

Notes

Plan: 20260929-0011-air-hub-two-tier-ssd202d Supersedes 20260928-2344-air-hub-first-build-rk3506j-cc1354p10.

• 2026-09-29: scope revised; SSD202D dropped. Two products: entry on RV1106G3 chip-down, Pro on an RK3506 stamp-hole core board with EFR32MG21; the 433 MHz link is encrypted with replay rejection. The ID keeps "ssd202d" from the first draft.

• complete: Lint 229 pages 0 findings; docs:build and git diff --check pass.