RAK9105U Smart Power Control Datasheet
Overview
Description
The RAK9105U PowerLink is a LoRaWAN-based remote power controller designed for managing power supply to devices such as gateways, LTE CPEs, WiFi routers, and IP cameras, especially in remote or hard-to-reach deployment environments.
- Remote Power Switching
By placing the RAK9105U between the power source and the target device, users can send LoRaWAN downlink commands to remotely toggle the power on or off. - Remote Device Reboot
Ideal for scenarios where devices freeze or require periodic reboots, such as LoRaWAN gateways or LTE CPEs in field installations.
Features
- Integrated RAK3172 LoRa module for long-range, low-power wireless control
- Supports LoRaWAN 1.0.3 Class C protocol
- Multi-band compatibility for global deployment
- Onboard LoRa antenna (Optional external antenna via IPEX connector)
- Remote power switching and rebooting via LoRaWAN downlink commands
- Plug-and-play integration available with Datacake platform
- Wide-range DC power input: 9–24 V via terminal block or DC jack (Compatible with RAK Battery Plus system for solar-powered deployments)
- Triple output design:
- 1 always-on 12 VDC output
- 2 controllable outputs (12 V + 5 V USB-C)
Specifications
Overview
Figure 1: RAK9105U overviewBlock Diagram
Figure 1: RAK9105U block diagramLoRa Connectivity
| Parameters | Specifications |
|---|---|
| Chipset | RAK3172 (STM32-based) |
| LoRaWAN Version | v1.0.3 Class C |
| Activation | OTAA (Over-The-Air Activation) |
| Frequency Bands | EU868, IN865, RU864, AU915, US915, KR920, AS923-1/2/3/4, EU433, and CN470 |
Hardware
The hardware specifications are categorized into six parts. The section discusses the interfacing and corresponding functions, electrical, environmental characteristics, and antennas.
Interface
DC Input Interface
Figure 1: DC input interface| Interfaces | Description | Remark |
|---|---|---|
| 12 VDC Input | DC power jack for external power supply | Supports 9-24 VDC input |
| 12 VDC Input (RS485) | 4-pin terminal block for DC power input and optional RS485 communication | DC Power input:
RS485 communication (Optional):
Compatible with RAK Battery Plus or other RS485-enabled systems |
DC Output Interface
Figure 1: DC output interface| Interfaces | Description | Specifications |
|---|---|---|
| Output1 | 12 VDC power jack (always on) | Voutput1 = Vinput -0.6 V Maximum Current 2 A |
| Output2 | 12 VDC power jack (MCU-controlled) | Voutput2 = Vinput -0.6 V Maximum Current 2 A |
| Output3 | 5 V USB Type-C (MCU-controlled) | Voutput3 = 5 V / 3 A Maximum Current 3 A |
Console
The Console interface is a USB Type-C port used to configure the onboard RAK3172 MCU or upgrade firmware via WisToolBox.
Antenna
| Parameter | Value |
|---|---|
| Peak gain | 2 dBi |
| Efficiency | > 70% |
| Polarization | Vertical |
Environmental Characteristics
| Feature | Specifications |
|---|---|
| Type of use | Indoor environment |
| Operating temperature | -30° C to +75° C |
| Storage temperature | -40° C to +85° C |
| Operating humidity | 0-95%RH non-condensing |
| Storage humidity | 0-95%RH non-condensing |
Mechanical Characteristics
Figure 1: RAK9105U dimensions- Dimensions: 105.5 mm × 74.4 mm × 37.2 mm
- Enclosure Material: PMMA
Battery Plus Information
RAK9105U uses the RAK3172 module to read and report the battery data over LoRaWAN. By default, it uses the integrated PCB antenna on the PCB. An optional i-PEX connector option can be requested.
Software
The firmware is based on RUI3 and comes pre-flashed. It includes default LoRaWAN keys, which are provided on a label on the device’s casing.
