A PCB mountable module includes logic circuitry that translates between serial and wireless communication protocols. Supported standards include I2C, CAN, ProfiBus, SPI, and USB, IP, ARP, UDP, TCP, ICMP, Telnet, TFTP, AutoIP, DHCP, HTTP, and SNMP. Modules can optionally provide security, MILARRS functionality, and web related services such as email alert. The novel modules can be used wherever a device designer wants a plug-in (or “drop-in”) system that obviates the need for independent development and maintenance of wireless capability. Examples include servers, desktop and laptop computers, and even devices such as kitchen appliances with relatively simpler electronics.