WS201-868M Smart Fill Level Monitoring Sensor WS201 is a wireless fill level monitoring sensor specially designed for small containers. Equipped with ToF technology and a large sensing range, WS201 is particularly suitable for close range detection and high accuracy applications. Thanks to its extremely low power consumption and standby mode, it ensures long battery life. With a special structure and moisture-resistant coating, WS201 can work stably in metallic environments and various scenarios. The built-in NFC function enables easy operation and configuration. Radio standard