Features: Highly Integrated: SOP-18 Digital Receiving OLED Health Monitoring Module PCBA is a highly integrated blood oxygen sensors module that can provide accurate and reliable blood oxygen monitoring functions. Digital reception: This module has a digital reception function, which can directly transmit blood oxygen data to the display device, making it convenient for users to monitor their health status in real time. OLED display screen: The product is equipped with an OLED display screen, allowing users to clearly view blood oxygen data and other related information, providing a better user experience. Quality signal processing: The motherboards adopts quality signal processing circuits, which can eliminate interference and provide stable blood oxygen data output. Easy to use: The product design is simple, and users only need to connect the module to the display device to start blood oxygen monitoring, which is very convenient and easy to operate. Specifications: Material: Printed Circuit Board Display method: OLED display screen SpO2 measurement range: 36% -99%, (resolution of 1%) Accuracy: 70%~100%: ± 1%, under 70% unspecified PR measurement range: 25bpm~250bpm, (resolution of Ibpm) Accuracy: ± 2bpm or ±2% (choose larger) Power consumption: less than 25mA Voltage: Direct Current 2.6V~3.6V Power supply: 1.5V (AAA grade) alkaline batteryx2 Safety type: built-in battery, BFtype Package Includes: 1x SPO2 Digital Receiving OLED Health Monitoring Module note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.