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USB ISP Programmer Version 2.0 E-991 This downloader supports 3.3V and 5V STC full range of all SCM burning procedures. The highest baud rate 115200 perfect support! No longer for the STC10 sense, STC12 series, STC11 ser The programmer automatically downloads without cold start, no need to frequently power down SCM. Thi The burner with USB to TTL, USB to serial port function, can be used for USB to TTL electronic produ With 500MA self-recovery fuse, perfect to protect your computer motherboard! -
TTGO LoRa32 433/868/915Mhz ESP32 LoRa OLED 0.96 Inch SD Card Bluetooth WIFI Wireless Module-V1.6.1 S E-990 ESP chip: ESP32 PICO-D4 Flash: 4MB Protocol: 802.11 b/g/n (802.11n, speed up to 150 Mbps) Polymerization A-MPDU and A-MSDU, support 0.4 Frequency range: 2.4GHz ~ 2.5GHz Protocol: Complies with bluetooth v4.2 BR/EDR and BLE standard Radio frequency: With -97dBm sensitivity NZIF receiver, class 1, class 2 and class 3 AFH transmitter Audio Frequency: CVSD and SBC Audio Frequency Operating frequency: 868M/915MHz Transmission power: +20dBm Reception sensitivity: 139dBm @ LoRa and 62.5Khz and SF = 12 and 146bps 136dBm @ LoRa and 125Khz and SF = 12 and 293bps 118dBm @ LoRa and 125Khz and SF = 6 and 9380bps 123dBm@FSK&5Khz&1.2Kbps Frequency error: +/- 15KHz FIFO space: 64 bytes Data speed: 1.2K~300Kbps@FSK

