Esp-01/Esp-01s 8266 Serial Port to WiFi Module Industrial Grade Low Power Consumption Wireless Module - China Esp-01/Esp-01s 8266, Module | Made-in-China.com
Low Power Wifi Module Small Size Wifi Module Wireless Network Module DIY 6259264359834 | eBay
Low Price Low Power Consumption Esp8266, At Command Esp8266 Wifi Module For Home Automation - Gps Receiver & Antenna - AliExpress
WiFi Module Development Board, Low Power Consumption Meshtastic T-Beam High Sensitivity Integrated Module For Wireless Communication - Walmart.com
5pcs ESP32-WROOM-32U 4MB ESP WiFi Module IC Chip Low Power Consumption Dual Core | eBay