1. MinewSemi ME54BS61 (Bluetooth 6.0 Module)

Features:
Based on the Nordic nRF54L15 SoC, supports Bluetooth 6.0, Bluetooth Mesh, Thread, and Matter protocols.
Measuring only 6x6mm, it features ultra-low power consumption (0.7μA in System OFF mode).
Supports a UART interface, suitable for short-range, low-power transmission.
Industrial-grade temperature range (-40°C to +105°C).
Applications:
Smart home, medical monitoring, wearable devices, etc.
Advantages:
High integration, reduced external component requirements, and low BOM cost.
Dynamic Value-Shifted Feedback (DVFS) and peripheral-level power gating technology.

2. PTR54L15 (Multi-protocol Low-Power Module)

Features:
Based on the Nordic nRF54L15 SoC, dual-core M33 architecture (128MHz clock speed), 1.5MB Flash + 256KB RAM. Ultra-low power design (receiver sensitivity -96dBm @ 1Mbps), suitable for battery-powered devices.
Supports BLE 6.x, Matter, Thread, ANT+, NFC, and other protocols.
Built-in hardware accelerator supports edge AI computing.
Application scenarios:
Industrial automation, wearable devices, AR/VR, bicycle/motorcycle accessories.
Advantages:
Multi-protocol compatibility, adaptable to complex IoT ecosystems.
Rich peripheral interfaces (31 I/O pins), compact package (10×15mm).

3. U-BLOX SARA-R520 (Cellular Communication Module)

Features:
Supports LTE-M and NB-IoT dual-mode communications, covering global frequency bands.
Integrated GNSS positioning (supports GPS and Galileo), SpotNow technology achieves sub-second positioning.
Ultra-low standby current (microamperes), supports PSM/eDRX energy-saving modes. 23dBm RF output power, suitable for weak signal environments.
Applicable Scenarios:
Asset tracking, smart meters, environmental monitoring, and industrial IoT.
Advantages:
Supports cellular network remote communication, suitable for wide area network deployments.
Long-term network compatibility (compatible with 5G RedCap evolution direction).
With a single module cost of less than $15, it's suitable for large-scale deployments.

4. Anshuo Technology BLE5.2 Master-Slave Serial Port Module

Features:
Supports BLE5.2 protocol, transmit power of +8dBm, receive sensitivity of -97dBm.
Supports UART transparent transmission mode and AT command configuration, with a baud rate range of 1200-921.6Kbps.
Low-power design, suitable for industrial data transmission, medical equipment, sensors, and more.
Applicable Scenarios:
Industrial sensors, Bluetooth car keys, scanners, and smart homes.
Advantages:
Low cost, domestically produced solution, and support for custom development.
Compatible with Bluetooth Mesh networking and has strong scalability.

5. Yunliwuli MS46SF11 (Low-Energy Bluetooth Serial Port Module)

Features:
Powered by a Nordic chip, it boasts power consumption below 1μA and a transmission rate of 11kB/s.
Compact size (15.8×12×2mm), supports iBeacon broadcast mode.
Supports Android 4.3+/iOS 7.0+, no MFi certification required.
Applicable Scenarios:
Smart home, smart healthcare, security equipment, and sports and fitness equipment.
Advantages:
Extremely cost-effective, suitable for projects with limited budgets.
Shielded design provides strong anti-interference capabilities.

Suggested Selection:

1. Short-range, low-power scenarios (such as smart home and wearable devices):
Preferred: MinewSemi ME54BS61 or PTR54L15, offering both multi-protocol support and ultra-low power consumption. Alternatives: MS46SF11 (low-cost), Anshuo Technology BLE5.2 Module (for industrial scenarios).

2. Long-range WAN communications (such as asset tracking and smart meters):
Preferred: U-BLOX SARA-R520, which supports LTE-M/NB-IoT and offers wide coverage.

3. High integration and edge computing requirements (such as industrial sensors and AR/VR):
Preferred: PTR54L15, with its built-in AI accelerator and multi-protocol support.