DF400 Smart
Toilet Paper Level Sensor
DF400 is a Toilet Paper detector, which can be used to detect the toilet paper remaining; when empty alarm occurs, the data will be immediately transmitted to the cloud server through the built-in module. Users can observe status information remotely. Th
Based on low power consumption algorithm, the internal battery can work for about 1 year (report 3 times a day)
![](/web/image/1398-81f3e6e2/A8517FE3-D566-4c69-B762-9B70FD2CA564.png)
Features
24h Remote Monitoring
Infrared Laser
Low Power Consumption
Wireless Transmission
High Sensitivity
Easy Installation
network diagram
Sensor →Base Station/Gateway→Cloud Server→Application
![](/web/image/1399-5d124734/86D601CC-D8B9-407c-ACDC-6AF2169DB71E.png)
SAAS
![](/web/image/1393-3bb0837b/WPS%E5%9B%BE%E7%89%87%282%29.png)
Specification
![](/web/image/3371-9d8bb3eb/%E4%BC%A0%E6%84%9F%E5%99%A8%E5%B0%BA%E5%AF%B8.jpg)
Dimension : 68x64x18mm
Net weight : 40g
Color : Black
Shell material : ABS
Theory : Laser Ranging
Measuring range : 3~200cm
Blind area : 3cm
Accuracy of height : 3mm
Wireless : NB-IoT / LoRaWAN / Sigfox
Frequency : NB-IoT: B3/B5/B8/B20/B28 LoRaWAN: CN470/EU868/AU915 /US915/AS923 etc Sigfox: RCZ1/RCZ2/RCZ3/RCZ4
Power supply: AA battery*2 (Battery is not included by default)
Battery Life : 1 year (3 times report per day )
Working Temperature : -20 ~ +70℃
Storage Temperature : -40 ~ +85℃