Working temperature range of -40 ℃ to 85 ℃ ensures reliable performance in extreme conditions. Storage environment tolerance of -40 ℃ to 125 ℃ with humidity levels below 90% RH. Power supply range of 5V for versatile applications. Supports serial port speed up to 256000 bps for high-speed data transmission. RoHS certified, ensuring compliance with environmental standards; SMD-6 packaging for compact integration. Working temperature: -40 ℃~85 ℃ Storage environment: -40C~125C. <90%RH Power supply range: 5V Serial port speed: Supports a maximum of 256000bps Certification: RoHS N/F: Shutdown Control. Maintain high level for normal operation; Internal pull-up. RXO: General-purpose GPIO, defaults to UART0 RXD. TXO: General-purpose GPIO, defaults to UART0 TXD. GND: Ground VCC: 5V Power Supply PPS: Time Pulse Signal Color: Black Material: PCB Package Contents: 2* GP-02 Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.