18650 Battery Pack Cell Insulating Pads Insulated gaskets for 18650 Li-ion batteries, designed to provide electrical insulation and protection. Ideal for battery pack assembly and safety enhancement. ESP32 Development Board with WROOM-32U/WROVER Module Development board compatible with ESP32-WROOM-32U and WROVER modules. Features WiFi connectivity with optional 2.4G antenna support. Designed for IoT and wireless application development. LCR-T4 Transistor Tester and ESR Meter High-quality component tester for diodes, transistors, triodes, capacitors, SCR, inductance, and more. Portable LCR meter with ESR testing functionality for electronic diagnostics. D1 Mini ESP32 Development Board Compact IoT development board based on ESP32, supporting WiFi and Bluetooth. Compatible with ESP8266-based platforms for Internet of Things projects. DC-ATX 120W Power Module DC to ATX power conversion module for high-power applications. Input range 16-27V, suitable for computer systems and industrial power solutions. NodeMCU V3 Wireless Development Board Lua-based IoT development platform featuring ESP8266 and CH340 USB-to-serial chip. Supports WiFi connectivity, ideal for rapid prototyping and wireless applications. Optional acrylic enclosure available. ESP32 WiFi and Bluetooth Development Board Versatile development board based on ESP32, supporting both WiFi and Bluetooth communication. Available with Type-C interface and optional acrylic case for prototyping and deployment. ESP32 REV1 Development Board Dual USB interface (Type-C and Micro USB) development board with lithium battery charging capability. Equipped with CH340G chip and supports MicroPython programming. ESP32-WROOM-32U Module with Optional Antenna Compact WiFi module based on ESP32, available with or without 2.4G antenna. Suitable for integration into various wireless applications and embedded systems. Product Dimensions: 48.1 x 27.8mm ESP32 DevKitC is an entry-level development board with all ESP32 pins broken out for easy access. Designed for evaluation of ESP32 modules and chips, it can be directly inserted into breadboards for quick testing and development. Package Includes: 1 x WROOM-32U Development Board Or 1 x Antenna Or 1 x WROOM-32U Development Board + Antenna