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Description
TTGO T-SIM7600E-H ESP32 WiFi Bluetooth 18560 Battery Holder Solar Charge Module Development Board, T-SIM7600E-HProduct Description Hardware Specifications: 1. Main chip: ESP32 2. Module: ESP32 WROVER B,SIM7600E H 3. Interface: USB,SD Card,Solar Input interface 4. Flash Memory: 4M Flash 8M PSRAM 5. Button: Reset,Power switch 6. USB to TTL: CP2104 7. Car Clock: 40MHz 8. SIM Card Size: Nano SIM Card 9. SIM Antenna 10. GPS Antenna 11. Operating Temperature Range: 40 85 degrees 12. Product Size: 111mm x 37mm x 20mm 13. Product Weight: 50g Power Specifications: 1.
Product Description Hardware Specifications:1. Main chip: ESP32
2. Module: ESP32-WROVER-B,SIM7600E-H
3. Interface:USB,SD Card,Solar Input interface
4. Flash Memory: 4M Flash / 8M PSRAM
5. Button: Reset,Power switch
6. USB to TTL: CP2104
7. Car Clock: 40MHz
8. SIM Card Size: Nano SIM Card
9. SIM Antenna
10. GPS Antenna
11. Operating Temperature Range: -40-85 degrees
12. Product Size: 111mm x 37mm x 20mm
13. Product Weight: 50g
Power Specifications:
1. Working Voltage: 5V input
2. Solar input voltage range???4.4-6V
3. Working Curent: About 200mA
4. Charging Current: 780mA
5. Battery Model: 18650
6. Battery Holder Model: 18650 battery holder
7. JST Connector: 2pin 2mm
8. USB: TYPE-C 3.0
Wi-Fi:
1. Standard: FCC/CE-RED/IC/TELEC/KCC/SRRC/NCC
2. Protocol: 802.11 b/g/n(802.11n???speed up to150Mbps)A-MPDU and A-MSDU polymerization???support 0.4??S Protection interval
3. Frequency: range 2.4GHz~2.5GHz(2400M~2483.5M)
4. Transmit Power: 22dBm
5. Communication distance: 300m
Bluetooth:
1. Protocol meet Bluetooth : v4.2BR/EDR and BLE standard
2. Radio Frequency : with -97dBm sensitivity NZIF receiver Class-1, Class-2&Class-3 emitter AFH
3. Audio Frequency : CVSD&SBC audio frequency
Software Specification:
1. Wi-Fi Mode : Station/SoftAP/SoftAP+Station/P2P
2. Security Mechanism : WPA/WPA2/WPA2-Enterprise/WPS
3. Encryption Type : AES/RSA/ECC/SHA
4. Firmware Upgrade :UART download/OTA???Through network/host to download and write firmware???
5. Software Development : Support cloud server development /SDK for user firmware development
6. Networking Protocol : IPV4, IPV6, SSL, TCP/UDP/HTTP/FTP/MQTT
7. User Configuration : AT + Instruction set, cloud server, Android/iOS APP
8. OS : FreeRTOS
Version update function:
1. The batterys positive and negative poles are connected to the wrong protection, overcharge and over discharge protection
2. GPS power control, reduce power consumption, the lowest reaches 300uA when sleeping
3. Replacement of ordinary charging IC with solar charging IC
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
4.0 ★★★★★
Based on 6 reviews
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Product Reviews
★★★★★ 5
Awesome Pillows
Color: Blue, Size: King(2 Pack)-20'*36'
AWESOME, they actually stay cool!!! Extra foam to firm and great instructions how to remove foam and make softer. Fantastic product
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 16, 2026
★★★★★ 4
Very fluffy and comfortable.
It only stays cool for a few minutes. It is a very comfortable pillow.
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Reviewed in the United States on December 13, 2025
★★★★★ 5
Double Sided Cooling Pillow
Color: Blue, Size: King(2 Pack)-20'*36'
I truly love these pillows. They are sent with extra filling so if their not firm enough you can add more and if their to firm you can remove some. You can make these pillows to your liking. They fluff right back up. Their comfortable and you really get your moneys worth. I love them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 31, 2026
★★★★★ 5
Fantastic pillows
Color: Blue, Size: Standard(1 Pack)-20'*26'
Fantastic pillows----never get headaches like others
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Reviewed in the United States on April 29, 2026
★★★★★ 5
Recommend this product
Color: Blue, Size: Queen(2 Pack)-20'*30'
I bought these for my boyfriend who is a hot sleeper. They are super thick & comfortable. The pillow stays cool & has a great texture. They didn’t have a bad smell. Bought these 3 years ago & they are still like brand new, durable
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026