Waveshare Industrial 4-Ch PWM Output Module Isolated RS485

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Description Waveshare Industrial 4-Ch PWM Output Module Isolated RS485 is an industrial Modbus RTU module designed to convert RS485 commands into 4 independent PWM output channels. It supports adjustable frequency and duty cycle per channel, making it suitable for industrial signal generation, remote control, and automation systems that need precise PWM control over long-distance communication. This module is built for industrial environments with power and signal dual isolation, wide voltage input, surge and ESD protection, and convenient DIN rail / wall mounting. It is especially useful in control cabinets, PLC systems, distributed controllers, and field devices that require stable PWM output over Modbus RTU. Features 4 independent PWM output channels with separate control of frequency and duty cycle. RS485 interface with standard Modbus RTU protocol for industrial automation integration. PWM frequency range from 1Hz to 200kHz. Duty cycle range from 0% to 100%. High precision control with fine frequency and duty cycle resolution. Power and signal dual isolation for stronger anti-interference performance and safer field deployment. Wide voltage power input with DC 7~36V support. Selectable output level for 3.3V or 5V PWM output. Industrial protection circuits including TVS, resettable fuse, anti-reverse, and ESD protection. DIN rail and wall mounting support for industrial control cabinets. Specifications Product Type Industrial 4-Ch PWM Output Module Communication Interface RS485 Protocol Modbus RTU Baud Rates 4800, 9600, 19200, 38400, 57600, 115200, 128000, 256000 Default Format 9600, N, 8, 1 PWM Channels 4 Frequency Range 1Hz ~ 200kHz Frequency Resolution 0.01Hz Duty Cycle Range 0 ~ 100% Duty Cycle Resolution 0.1% Power Supply DC 7~36V Output Voltage 3.3V or 5V selectable Output Current Show more