Waveshare

Introducing the DIN Rail ABS Case for Raspberry Pi 4 by Waveshare.Supports DIN rail mounting: Easy installation with rail lock design.Spacious interior: Accommodates extra add-ons like PoE HAT and RS485 CAN HAT.Customizable opening: Customize the opening for orders of 200PCS or more.

Waveshare WM8960 Audio Hi-FI Sound Card Hat for Raspberry Pi Stereo CODEC Play Record I2S Interface is a high-quality sound card designed for Raspberry Pi, offering low power consumption and Hi-Fi playback/recording capabilities.Raspberry Pi Connectivity: Compatible with Raspberry Pi Zero/Zero W/Zero WH/2B/3B/3B+.WM8960 Stereo CODEC: Integrates WM8960 low power stereo CODEC, communicates via I2S interface.Dual High-Quality MEMS Microphones: Supports left & right double channels recording, with nice sound quality.

An RS232/485/422 data acquisitor/IoT gateway designed for industrial environment. Combines multiple functions in one.Multi-Functionality: Serial server, Modbus gateway, MQTT gateway, RS485 to JSON conversion.Power Options: Supports PoE Ethernet power supply, DC port, wide voltage range input.Communication: Supports TCP server/client/UDP modes, MQTT/JSON to Modbus conversion.