1 pcs SPI to Ethernet/TCP/IP W5500 Module & 1 pcs Pulse Heart Rate Sensor Module Pulse Heart Rate Sensor Module: Pulse Sensor is a well-designed plug-and-play heart-rate sensor for Arduino. It can be used by students, artists, athletes, makers, and game & mobile developers who want to easily incorporate live heartrate data into their projects. The sensor clips onto a fingertip or earlobe and plugs right into for Arduino with some jumper cables.It also includes an open-source monitoring app that graphs your pulse in real time. Power: 3-5V Fit for:for Arduino Raspberry pi Diameter: 16mm Magnification: 330 LED Wavelength: 609nm Dimensions:L 220mm x Diameter 16 mm SPI to Ethernet/TCP/IP W5500 Module: Supports Hardwired TCP/IP Protocols : TCP, UDP, ICMP, IPv4, ARP, IGMP, PPPoE Supports 8 independent sockets simultaneously Supports Power down mode Supports Wake on LAN over UDP Supports High Speed Serial Peripheral Interfac(SPI MODE 0, 3) Internal 32Kbytes Memory for TX/RX Buffers 10BaseT/100BaseTX Ethernet PHY embedded Supports Auto Negotiation (Full and half duplex, 10 and 100-based ) Not supports IP Fragmentation 3.3V operation with 5V I/O signal tolerance LED outputs (Full/Half duplex, Link, Speed, Active) 48 Pin LQFP Lead-Free Package (7x7mm, 0.5mm pitch) Chip type: W5500 Supports both 3.3V & 5V. 10BaseT/100BaseTX Ethernet PHY embedded Supports automatic response (full duplex / half duplex mode) Supports 8 independent sockets simultaneously Internal 32Kbytes Memory for Tx/Rx Buffers Power off mode: support Network wake: support SPI interface (SPI MODE 0, 3),convenient connection with MCU Size: 55mm x 28mm Colour:black+red & Blue material:ABS plastic & PC + metal Package Contents: 1 x SPI to Ethernet/TCP/IP W5500 Module 1 x Pulse Heart Rate Sensor Module Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement all