HLK-PM01

The HLK-PM01 is a compact, cost-effective Wi-Fi module developed by Hi-Link, designed for IoT and smart home applications. It features:
- Wi-Fi Connectivity: Supports 802.11 b/g/n (2.4GHz).
- MCU Integration: Built-in ESP8285 (1MB flash, 80MHz clock).
- Interfaces: UART, GPIO, PWM, and ADC for peripheral control.
- Low Power: Supports deep sleep mode for energy efficiency.
- Easy Development: Programmable via AT commands or Lua scripts.
Ideal for DIY projects, smart devices, and wireless sensor networks, the HLK-PM01 offers plug-and-play functionality with minimal external components. Its small size (16mm × 24mm) and affordability make it popular for embedded Wi-Fi solutions.
For setup, connect via UART (3.3V logic) and configure using Hi-Link’s documentation or third-party tools like Arduino/PlatformIO.

The HLK-PM01 is an AC-DC power module. Equivalent products include:
- Hi-Link HLK-5M05 (similar series)
- Murata OKI-78SR (switching regulator)
- RECOM RAC05 (AC-DC converter)
- XP Power VCE05 (compact AC-DC module)
These alternatives offer comparable voltage output (5V) and power ratings (~1W-5W). Check specs for exact compatibility.

The HLK-PM01 is a compact power meter module with the following key features:
- Measurement Parameters: Tracks voltage (90–250V AC), current (0–10A), active power (0–2200W), and energy consumption (kWh).
- Communication: Uses UART (TTL) for data transmission, compatible with microcontrollers like Arduino and ESP8266/ESP32.
- Accuracy: High precision (±1% for voltage/current, ±2% for power).
- Isolation: Built-in optocoupler for safe electrical isolation.
- Compact Design: Small PCB form factor (48mm × 33mm) for easy integration.
- Real-Time Data: Provides instantaneous readings and cumulative energy usage.
- Wide Compatibility: Works with smart home systems, energy monitors, and IoT projects.
Ideal for DIY energy monitoring, home automation, and power management applications.

The HLK-PM01 is manufactured by Hi-Link Electronic Technology Co., Ltd., a Chinese company specializing in power supply modules, IoT solutions, and smart home devices. Founded in 2003 and headquartered in Shenzhen, Hi-Link focuses on compact, efficient AC-DC and DC-DC power modules, catering to industrial, consumer, and automation markets. The company is known for cost-effective, reliable products but is not as globally recognized as larger electronics firms. The HLK-PM01 is a compact AC-DC power module, commonly used in low-power applications.

The HLK-PM01 is a compact AC-DC power module, typically packaged in a small, enclosed plastic case with metal pins for PCB mounting. It features a non-isolated design and is commonly used in low-power applications. The package type is usually a through-hole or surface-mount module, depending on the variant. Exact dimensions and pin configurations can vary, so refer to the datasheet for specifics.