Resideo AT87A1189 Transformer 318820-201 it can be programmed to

it can be programmed to respond to occupancy status shared over the network or via a hardwired dry contact connected to a universal input

the Magnehelic is a purely mechanical instrument that operates on pressure differentials

As a direct factory replacement for the legacy 6910605 thermodisc board

suitable for a wide variety of refrigeration cabinets and small AC units

the D5 with the silver spring is specifically rated for a 1-10 psi delivery range

Resideo AT87A1189 Transformer 318820-201 it can be programmed toThe Resideo AT87A1189 Transformer is a heavy duty 277V to 24V control transformer engineered for reliable power delivery in commercial HVACR and building automation systems. Built to handle 48VA loads, this unit features a 277V primary and provides a precise 26. 5 V. O. C. secondary output to ensure stable performance for 24VAC control circuits, driving relays, or powering digital I O components. As a NEMA Type E transformer, it integrates energy