Dear Manager, Greetings from Marvin Li! We are supplier of the water level water speed water flow sensors for the river and the open channel or underground pipe and so on with wireless module and the software, the following is the sensor product weblink for your reference: 1. Ultrasonic water level sensor-3 meters http://vip.ossedm.com/index.php/campaigns/jg257alzww7bd/track-url/nz150wsv0n... 2. Ultrasonic water level sensor-5/10/15 meters http://vip.ossedm.com/index.php/campaigns/jg257alzww7bd/track-url/nz150wsv0n... 3. Radar water level sensor- 7 meters http://vip.ossedm.com/index.php/campaigns/jg257alzww7bd/track-url/nz150wsv0n... 4. Radar water level sensor- 40 meters http://vip.ossedm.com/index.php/campaigns/jg257alzww7bd/track-url/nz150wsv0n... 5. Radar water speed sensor- 0-20m/s measure range http://vip.ossedm.com/index.php/campaigns/jg257alzww7bd/track-url/nz150wsv0n... 6. Radar water speed water level water flow 3 in 1 sensor- 7 meters measure range http://vip.ossedm.com/index.php/campaigns/jg257alzww7bd/track-url/nz150wsv0n... 7. Radar water speed water level water flow 3 in 1 sensor- 40 meters measure range http://vip.ossedm.com/index.php/campaigns/jg257alzww7bd/track-url/nz150wsv0n... 8. Ultrasonic water pipe sensor http://vip.ossedm.com/index.php/campaigns/jg257alzww7bd/track-url/nz150wsv0n... 9. Ultrasonic water pipe sensor http://vip.ossedm.com/index.php/campaigns/jg257alzww7bd/track-url/nz150wsv0n... Our advantages: 1. We can supply all kinds wireless modules: GPRS/4G/WIFI/LORA/LORAWAN 2. We can also supply cloud server and software if using our wireless modules to see real time data in PC or mobile. 3. The software can set the alarm data and which will send you an email when some values unnormal Please check above and feel free to contact me if you have any question or any need. And the sample can be sent if you need to make the test and we can accept the Ali payment. By the way, please contact me by my WhatsApp: +86-15210548582 for the quickly reply. Wait for your reply. Best regards Marvin ------------------------------------------------------------------------------- HONDE TECHNOLOGY CO., LTD  Xiaodian Pioneer Park, Jinzhan Township, Chaoyang District, Beijing,100018,China Contact Person: Marvin Li (Sales Manager) WhatsApp/Tel/WeChat: +86-15210548582 Skype: 86+15210548582 Email: info@hondetech.com Website:  http://vip.ossedm.com/index.php/campaigns/jg257alzww7bd/track-url/nz150wsv0n... http://vip.ossedm.com/index.php/campaigns/jg257alzww7bd/track-url/nz150wsv0n... http://vip.ossedm.com/index.php/lists/jp170fnlo3133/unsubscribe/nz150wsv0n5b...