RS485 is a common serial communication standard with features such as good noise rejection, long transmission distance, and multi-drop capability. It transmits data using a differential transmission method, which allows it to suppress common-mode interference. RS485 requires a pair of twisted-pair cables and two terminal resistors to eliminate signal reflection during long-distance communication.
This dual-channel RS485 expansion HAT designed for the Raspberry Pi adopts an isolated transceiver to achieve isolation for RS485, which increases the reliability and anti-interference of data transmission in each channel. And it features embedded protection circuits such as a lightning and surge protector, a TVS diode, and power supply isolation to protect the Raspberry Pi development board effectively.
Besides, the order includes a screw accessory kit that allows users to tightly fix this board onto a Raspberry Pi controller.
- Agricultural Internet of Things
- Warehouse Internet of Things
- Indoor and Outdoor Environmental Monitoring
- Lighting Control
- Security Access Control System
- Dual Channel RS485
- Electrical & signal isolation
- Lightning & surge protection
- Transient voltage suppressor
- RX/TX data transmitting/receiving indicator
1 x RS485 Expansion HAT for Raspberry Pi
4 x Copper Column & Screw
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