Things are always changing. As an HVAC technician this mean a lot of footsteps to see what those changes are. Fieldpiece wireless is the answer. Using a transmitter and receiver, any Fieldpiece accessory head can be converted into a wireless measurement system. Now you can have the information you need where you need it. Calculate target superheat at the condenser with wireless wet-bulb, determine proper split with differential temperature, monitor CO in furnace room with the door closed, measure current in a completely closed blower compartment, or measure vacuum at the evaporator while standing at the condensing unit. The possibilities are only limited to your innovation and imagination. Wireless might be your single best investment this year.