Tapo T300
 
Smart Water Leak Sensor SPEC: 868 MHz, 2 x AAA Battery FEATURE: Tapo Hub Required, Dripping and Leaking Detection, 90dB Alarm Audio, Mute and Volume Control, Weatherproof (IP67), Smart Action, Tapo App
 
Tapo T310
 
Smart Temperature and Humidity Sensor SPEC: 922 MHz, Battery powered(1*CR2450), temperature range and accuracy: -20℃~60℃, ±0.3℃，humidity range and accuracy: 0~99%RH, ±3%RH Feature: Tapo smart app, Tapo IoT hub required, smart action, high accuracy monitoring, alart and notification,  2s Refresh time, 2 years Date storage and export, battery included, 3M bonding tape, adhesive magnet and lanyard included
 
Tapo T315
 
Smart Temperature and Humidity Monitor SPEC: 868 MHz, battery powered(2*AAA), 2.7 inch E-ink display, temperature range and accuracy: 0℃~50℃, ±0.3℃，humidity range and accuracy: 0~99%RH, ±3%RH Feature: Tapo smart app, Tapo IoT hub required, smart action, clear and sharp E-ink display, real-time monitoring and expression display,  2s Refresh time, 2 years Date storage and export, alart and notification, face icon comfort indicator, battery included, 3M bonding tape and magnet included, CE/UKCA certified.