W5500 Ethernet Arduino Shield UNO Web Server Expansion Module The Ethernet module for Arduino and compatible boards based on the Wiznet W5500 chip, faster than the previous W5100. It provides an easy way to connect your module to the local network and internet based WIZNET with a TCP/IP interface. Compatible with libraries with the same Ethernet API. A web server can be built with this UNO board shield. It can be used as a server or as a client. Code W0106 Available Price €19.50
Bluetooth Wireless Module 4.0 CC2541 Android IOS HM-10 BLE Arduino Android IOS Master Slave Bluetooth Modul for Arduino iOS Android. The HM10 supports Bluetooth 4.0 (low energy) and therefore has a relatively low power consumption. Code W0008 Available Price €17.89
MH-Z1311A low-power consumption NDIR CO2 sensor Low power CO2 sensor MH-Z1311A, the current consumption is only 150-200uA, waterproof and anti-corrosion, high sensitivity, additionally characterised by excellent linear output. It is very popular used for battery monitors and IAQ devices. Code S0158 Available Price €29.49