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ENERGENIE ALKALINE D-CELL BATTERY 2-PACK
D-cell LR20 1.5V alkaline battery
High performance and long life
Non-rechargeable

Rated voltage: 3.7 V
Capacity: 2500 mAh
Voltage overload limit: 4.3 ±0.05 V
Voltage overload limit: 2.75 ±0.1 V
Continuous discharge rate: 25 A
Operating temperature: charging 0~45 °C, discharging -20~60 °C
Storage temperature: -20~45 °C
Storage voltage: 3.7-3.85 V
Dimensions: diameter: 18.4 mm, height: 65.2 mm
Net weight: 46 g

The ESP32-ESP-WROOM-32 development kit is an ideal kit for learning how to program the ESP-WROOM-32 module and testing its capabilities. One board contains the above-mentioned communication module / micro-controller, a USB -> UART interface based on the CP2102 chip, buttons that facilitate switching the device to programming mode and a voltage converter thanks to which the whole thing is powered directly from the micro USB connector. In addition, all pins of the ESP-WROOM module are provided as goldpin connectors, so the module can be used with any breadboard without the need for soldering. The device allows you to use Wi-Fi (802.1 b/g/n), Bluetooth / Bluetooth LE protocols and, if necessary, your own protocols written by the user.

The ESP32-ESP-WROOM-32 development kit is an ideal kit for learning how to program the ESP-WROOM-32 module and testing its capabilities. One board contains the above-mentioned communication module / micro-controller, a USB -> UART interface based on the CP2102 chip, buttons that facilitate switching the device to programming mode and a voltage converter thanks to which the whole thing is powered directly from the micro USB connector. In addition, all pins of the ESP-WROOM module are provided as goldpin connectors, so the module can be used with any breadboard without the need for soldering. The device allows you to use Wi-Fi (802.1 b/g/n), Bluetooth / Bluetooth LE protocols and, if necessary, your own protocols written by the user.