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ML307C 4G Module
The other chip in the family
Page 61 drives the ML307C with the same feature set as page 60 (signal, registration, APN, TCP/MQTT, SMS); the differences are in firmware version and AT details.
Because the two modules initialise slightly differently, the firmware keeps them on separate pages so their timings never interfere.
Screen
On-screen interface
A recreation of this page on the 2.41-inch AMOLED display (600 Γ 450). Actual interaction and layout follow the latest firmware.
Signal-71dBm Β· good
Networkregistered Β· CHN-UNICOM
APN / IP3gnet Β· 10.42.7.19
Supply3.4β4.2 V Β· own supply
Health88
Shares 43/44 with p.19/32/34 β one at a time
Screen Β· Page 61
May differ from the actual interface; the screen of the real device is the final reference.
Highlights
Key capabilities
π‘
Separate init
Own timing sequence from the ML307R.
π§Ύ
AT echo
Raw replies visible line by line.
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Supply warning
3.4β4.2 V from its own supply.
π©Ί
Health score
Four failure modes reported separately.
Specifications
Technical specs
Network4G Cat.1
UART43 (TX) / 44 (RX), exclusive with pages 19/32/34
Supply3.4β4.2 V
Firmware pagePage 61
Use Cases
Typical scenarios
Fleet builds
Standardise on the ML307C.
Air780E swap
Cheaper part with a similar AT set.
Commands
Related commands
page 61 Open the ML307C page cell Read signal and registration
β Boundaries & notes
- Exclusive with pages 19/32/34 β one owner of the 43/44 UART.
- AT field order differs from the Air780E; check the raw echo first.
Other feature pages
π Overview Home12-tile quick launch plus everyday toggles β the power-on default, and where everything starts.β‘Dashboard Β· Power & ConsumptionBLE-connected current meter with live voltage/current/power curves at fixed-point 10βΆ precision.πWaveform PanelLive curves for frame rate, heap and task load β spot the bottleneck at a glance.π΅BLE DebuggerBLE scan/connect/service discovery with full GATT tree browsing and read/write.