This is a TTGO T-Higrow ESP32 Wifi Bluetooth Humidity Photometric Electrolyte Sensor Unsoldered. The capacitive soil moisture sensor differs from most of the resistive sensors on the market, using the capacitive sensing principle to detect soil moisture. It avoids the problem that the resistance sensor is easy to corrode and greatly prolongs its working life.S18B20 waterproof temperature sensor is used for t-higrow and t-watch with the t-grove interface. For example, it can be used with t-higrow to test the temperature and humidity of flowerpot soil and environment, as well as the water temperature of fish tanks when raising fish.

Features:

1. It is easy to carry anywhere.
2. the temperature sensor makes it unique because of the sensors waterproof property.

Package Includes:

1 x Unsoldered TTGO T-Higrow ESP32 Wifi Bluetooth Humidity Photometric Electrolyte Sensor

Specifications :-

Chipset	ESPRESSIF-ESP32 (Wi-Fi & Bluetooth)240MHz Xtensa single-/dual-core 32-bit LX6
Input Voltage(V)	3.7-4.2V
Charging current(mA)	500mA
Sleep current(uA)	220 uA
Battery Required	3.7V lithium battery
Flash Memory	4MB
SRAM Memory	520 KB
Frequency range	2.4~2.5GHz
Transmit Power(	22dBm
Communication distance(m)	300 m
On-board clock Frequency(MHz)	40 MHz
Temperature and humidity sensor	DHT11
Working Temperature Range	-40~85
Length (mm)	155
Width (mm)	35
Height (mm)	20
Shipment Weight	0.024 kg
Shipment Dimensions	16 6 1 cm