STEM

12V/24V Digital Stereo Bluetooth 5.0 Amplificator Module
Bluetooth version:5.0
Transmission distanc:15m — Ideal for IoT, education, and rapid prototyping. PAN‑India shipping with GST invoice.

3W+3W Bluetooth Audio PCB Board — Ideal for IoT, education, and rapid prototyping. PAN‑India shipping with GST invoice.

5V 8 Channel Relay Module ESP32 Wireless Development Board WIFI With Optocoupler Isolation
FLASH: 4MB； PS RAM: 8MB
Interfaces: UART/SPI/12C/CAN/12S/SDIO
Maximum voltage : AC: 250V , DC : 28V
Power supply input range : DC12-24V
Size: 17*8.5*1.8cm — Ideal for IoT, education, and rapid prototyping. PAN‑India shipping with GST invoice.

BC-04 Bluetooth To RS232 Serial Adapter With DB9 Converter
Executive bluetooth SIG v2.1+EDR
Transmit power: 4 dbm
receiving sensitivity: -79dbm
operating voltage: 5V
Size: approx. 2.22×1.47×0.57″inch — Ideal for IoT, education, and rapid prototyping. PAN‑India shipping with GST invoice.

Bluetooth 5.0 Audio Receiver Board Lossless decoder Board Wireless Stereo Module
Working voltage: 3.7~24VDC;
Number of vocal tract: Dual Channel
Audio interface: 3.5mm audio interface — Ideal for IoT, education, and rapid prototyping. PAN‑India shipping with GST invoice.

BT 4.0 Dongle
Data Rate: Up to 3Mbps
Distance of Use: 10 meters
Frequency Band: 2.4~2.4835GHz
Spectrum FHSS
Modulation
GFSK for 1Mbps, p/4-DQPSK for 2Mbps; 8-DPSK for 3Mbps — Ideal for IoT, education, and rapid prototyping. PAN‑India shipping with GST invoice.

CC2640 Wireless Serial Port Module High Speed Smaller HM-19 CC2640R2F Module ble4.0 4.2 5.0
Speed: Asynchronous: 3-8K Bytes
Working frequency: 2.4GHz ISM band
Size: 27 * 13 * 2 MM — Ideal for IoT, education, and rapid prototyping. PAN‑India shipping with GST invoice.

DC 160W DIY Home Digital Amplifier Bluetooth 5.0 MP3 Decoder Board 12V 2*80W
Support 6.5mm microphone, 3.5mm earphone
Recording only supports operation in TF mode or USB mode.
Voltage :DC 8V-24V ; Current :1-4A — Ideal for IoT, education, and rapid prototyping. PAN‑India shipping with GST invoice.

ESP-WROOM-32 CP2102 WIFI+Bluetooth
Clock Speed: 160MHz
USB Converter: CP2102
USB Connector: Micro USB
Flash Memory: 4 MB
RAM: 512Kb
PWM: 16 channels — Ideal for IoT, education, and rapid prototyping. PAN‑India shipping with GST invoice.

ESP32 DHT11 Soil Temperature Humidity Sensor WIFI CP2104 Module
VCC: 3.3V-5V
CP2104 communication chip USB TO TTL
DHT11 temperature and humidity sensor
Size: 19.4x3cm — Ideal for IoT, education, and rapid prototyping. PAN‑India shipping with GST invoice.

ESP32-­S3-WROOM
ESP32-WROVER-E-N16R8
Supply Voltage – Min: 3 V
Supply Voltage – Max: 3.6 V
Dimension: 25.5 mm x 18 mm x 3.1 mm — Ideal for IoT, education, and rapid prototyping. PAN‑India shipping with GST invoice.

ESP32-DevKitC-32D WROOM-32D
Voltage: 3.3V / 5V
Flash size: 4MByte — Ideal for IoT, education, and rapid prototyping. PAN‑India shipping with GST invoice.

ESP32-Wroom Development Board Single Relay Module DC7-60V For ESP32 Secondary Development Smart Home Wireless Control
Work voltage: DC 5V/DC 7-60V
Work Temperature:-25℃~85℃
Board size: 57.5*53.7mm — Ideal for IoT, education, and rapid prototyping. PAN‑India shipping with GST invoice.

ESP32-WROVER-E
Connectivity: 2.4 GHz Wi-Fi & Bluetooth
Dimension : 18×31.4×3.3mm
Options of SPI flash sizes 4MB, 8MB, and 16 MB. — Ideal for IoT, education, and rapid prototyping. PAN‑India shipping with GST invoice.

ESP8266 ESP-01 ESP-01S RGB LED Controller Adapter Module IDE WS2812 Light Ring Smart Electronic Christmas DIY DC 5V Interface: 3Pin PH2.0 connector
Operating Voltage: DC 3.7V-5V
Support 3.7V lithium battery — Ideal for IoT, education, and rapid prototyping. PAN‑India shipping with GST invoice.

ESP8266 ESP-WROOM-32 ESP32-WROVER Development Board Test Programmer Socket Downloader for ESP-01 ESP-12F ESP-07S ESP-12S ESP32 — Ideal for IoT, education, and rapid prototyping. PAN‑India shipping with GST invoice.