This blade is CCW (Counterclockwise)

This valve is rated for all CFC

While the outside diameter (OD) is 5

As a precise direct replacement for EC1270A02

it is the primary replacement motor for several discontinued part numbers

Siemens Building Technology 540-520A Sensor 326058-757 This blade is CCW (Counterclockwise)The Siemens 540 520A Room Temperature Sensor is a critical field component designed specifically for integration with Siemens Terminal Equipment Controllers (TEC). Engineered for high accuracy environmental monitoring, this analog temperature sensor operates within a precise range of 55F to 95F (13C to 35C). By utilizing a standard RJ 11 connection, technicians can ensure a rapid, plug and play installation that minimizes wiring errors and labor time