AV - Air Velocity Sensors and Probes	LN - LonWorks	PS - Power Supplies	VB - Butterfly Valves
CN - Controllers	LS - Liquid Level Switches and Sensors	RE - Electric Heater Battery Controllers	VC - Balancing Valves
EP - Emergency Switches	MG - Gas Metering	RH - RH & T Sensors, Humidistats and Electronic Hygrostats	VE - Plug and Seat Valves
FC - Fan Speed Controllers	MW - Water Meters	SD - Smoke Detection Systems	VR - Rotary Shoe Valves
FS - Air and Liquid Flow Switches	OC - Occupancy Detection	ST - Thermostats	VS - Gas Safety and Solenoid Valves
GL - Gas Leak Detection	PA - Air Differential Pressure Sensors and Switches	TT - Temperature Sensors	VT - Terminal / Fan Coil Valves and Actuators
GS - Carbon Dioxide, Air Quality and Gas Sensors	PL - Liquid Pressure Sensors and Switches	UI - User Interface	VZ - Zone Valves
IO - Input / Output Modules	PM - Power Monitoring	VA - Damper Actuators	WD - Water Detection Systems
LL - Light Level Control