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Ships within 48 hours · Estimated delivery Aug 14 - Aug 19
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Description
TTGO T-PCIE ESP32-WROVER-B AXP192 Chip WiFi Bluetooth Nano Card SIM Series Module 4MB Hardware Composable Development Board, 4MBHardware specifications 1. Chipset: ESP32 WROVER B, AXP192 power management chip 2. Flash: 4MB 3. Static SRAM: 8MB 4. SRAM: 520 kB SRAM 5. Button: PWR power switch, reset 6. USB to TTL: CP2104 7. Vehicle clock: 40MHz crystal oscillator 8. Peripheral equipment: SIM Nano card slot, Mini PCIE card slot 9. Antenna: Onboard antenna (default) 10. Working voltage: 2. 7V to 3. 6V 11. Sleep current: About 700ma 12. Operating temperature range: 40 degrees
Hardware specifications1. Chipset: ESP32-WROVER-B, AXP192 power management chip
2. Flash: 4MB
3. Static SRAM: 8MB
4. SRAM: 520 kB SRAM
5. Button: PWR power switch, reset
6. USB to TTL: CP2104
7. Vehicle clock: 40MHz crystal oscillator
8. Peripheral equipment: SIM Nano card slot, Mini PCIE card slot
9. Antenna: Onboard antenna (default)
10. Working voltage: 2.7V to 3.6V
11. Sleep current: About 700ma
12. Operating temperature range: -40 degrees Celsius ~ + 85 degrees Celsius
13. Dimensions: 75 x 33 x 10.5 mm
14. Weight: 14.5g
Power Specifications
1. Power input: USB 5V / 1A
2. Charging current: 500 mA
3. Battery input: 3.7-4.2V
4. Charging IC: AXP192
5. JST connector: 2-pin 2.0mm
6. USB: Type C
wireless online
1. Standard: FCC / CE-RED / IC / TELEC / KCC / SRRC / NCC (ESP32 chip)
2. Protocol: 802.11 b/g/n (802.11n, speed up to 150Mbps) A-MPDU and A-MSDU aggregation, support 0.4uS guard interval
3. Frequency range: 2.4GHz-2.5GHz (2400M-2483.5M)
4. Transmit power: 22dBm
5. Communication distance: 300m
Bluetooth
1. Protocol: Compliant with Bluetooth v4.2BR/EDR and BLE standards
2. Radio frequency: NZIF receiver Class-1 with sensitivity of -97dBm, Class-2&Class-3 transmitter AFH
3. Audio: CVSD&SBC audio
Software specifications
1. Wi-Fi mode: Workstation / SoftAP / SoftAP + Station / P2P
2. Security mechanism: WPA / WPA2 / WPA2-Enterprise / WPS
3. Encryption method: AES / RSA / ECC / SHA
4. Firmware upgrade: UART download/OTA (download and write firmware via network/host)
5. Software development: support cloud server development / SDK for user firmware development
6. Network protocol: IPv4, IPv6, SSL, TCP, UDP, HTTP, FTP, MQTT
7. User configuration: AT + command set, cloud server, Android / iOS app
8. Operating system: FreeRTOS
Packing list
1. T-PCIE 4MB x 1
2. Charging cable x 1
3. Needle Pin x 2
Specification:
| Package Weight |
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Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 28 reviews
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Product Reviews
★★★★★ 5
Loooove these shoes!
Size: 7.5 Wide, Color: Chestnut Brown Faux Leather
I have these in several colors, and they’ve become a true staple in my wardrobe.
The Amazon Essentials Women's Belice Comfortable Slip-On Ballet Flats are exactly what I look for in an everyday shoe—simple, versatile, and comfortable right out of the box. The slip-on design makes them super convenient for busy days, and they pair effortlessly with everything from jeans to dresses to work outfits.
They’re lightweight but still feel supportive enough for all-day wear, and I appreciate that they don’t require a break-in period. The fit is generally true to size, and the variety of colors makes it easy to stock up and rotate depending on the outfit.
Overall, these are reliable, easy-to-wear flats that offer great value for the price. Not flashy, just consistently comfortable and practical—which is exactly why I keep coming back to them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 5, 2026
★★★★★ 5
Has the look that they should cost more.
Size: 11.5 Wide, Color: Dark Turquoise
Comfortable and the fit is very comfortable. Looks great and extremely comfortable. Soft and light weight. Easy to put on. Sizing was perfect and the wide width is truly a wide. I’m coming back for more colors.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026
★★★★★ 4
Good at price
Size: 9 Wide, Color: Sand
Fit a little small at my big toe but otherwise fit well. Heel rubbed slightly first 5 hour wear but no blister.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
★★★★★ 5
Lightweight comfortable at a good price!
Size: 10.5, Color: Navy
These shoes are perfect. The color matches my navy outfits as well as my denim. They are comfortable and they look great. They are easy to pack lightweight and a great value.
I am extremely satisfied and highly recommend!
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Reviewed in the United States on June 3, 2026
★★★★★ 3
REALLY CUTE SHOE BUT CUT WAY TOO SMALL!
Size: 8, Color: Black Patent
I received the black patent leather shoes today and they are so cute! Sadly I need to return them because they are cut way too small. I normally wear a 7.5 or 8 on dress shoes so I ordered the 8. They are so tight across the top that it's uncomfortable as soon as I put them on. They are smaller than a normal size 8 dress shoe. The big toe area is extremely uncomfortable because it doesn't allow any room for it at all, so my big toe just presses against the side and end of the shoe without even walking in them. I have very narrow feet and these still are too small for me. So I am returning them and I already ordered a 8.5 W and hope that will fit much better. The patent leather is very cute and adds just enough dressy that I can wear them with slacks or my Capri jeans. I like the slip on and the cushion foot bed because it feels soft.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
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