The RCWL-1605 is a compact, 2.8V-5V integrated ultrasonic distance sensor featuring an, omnidirectional integrated transceiver. It offers a 25cm to 4.5m range with 2mA current consumption, supporting GPIO, UART, IIC, and 1-WIRE modes. Its default mode is compatible with HC-SR04, ideal for robotics and proximity sensing.
Key Specifications & Features
- Operating Voltage: 2.8V – 5V DC
- Operating Current: ~2mA
- Ranging Distance: 25cm to 4.5m (approx.)
- Output Modes: GPIO (default/HC-SR04 compatible), UART, IIC, 1-WIRE
- Cycle Time: 50mS
- Chip: Uses professional RCCL-9623 chip for integration
Main features:
Working voltage: 2.8-5V
Working current: 2mA
Support multiple output modes of GP10 IIC and 1-WIRE, the default output mode is compatible with HC-SR04
50MS cycle
Modes of Operation
- The RCWL-1605 supports multiple interfaces, which can be configured based on the application requirements:
- GPIO Mode: Compatible with HC-SR04, it uses trigger and echo pins to determine distance.
- UART Mode: Provides direct serial output for distance or temperature data.
- IIC/I2C & 1-WIRE: Supports alternative communication protocols for more complex systems.
Applications:
- Robot Obstacle Avoidance
- Distance Measurement
- Liquid Level Detection
- Proximity Sensing
This sensor is often preferred over standard HC-SR04 models due to its wider operating voltage (good for 3.3V systems) and integrated transceiver, which simplifies the physical size of the sensor head.
Resources:
2. RCWL-1005 and RCWL-1605 (and HC-SR04P) I2C-mode Arduino library

