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. 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