Zn-401s Manual ((link)) -

Always ensure the power supply is disconnected before attempting to wire or mount the unit. 1. Product Overview and Specifications

The ZN-401S is designed for high-precision monitoring. Before installation, verify that your environment matches the technical requirements of the device. Typically ranges from 100V to 240V AC. zn-401s manual

High-visibility LED or LCD (depending on the specific sub-model). 2. Installation and Wiring Always ensure the power supply is disconnected before

RS485 / Modbus-RTU (standard for industrial automation). Operating Temperature: -10°C to 55°C. zn-401s manual