ZC-AM25-MS is a Zigbee and RF433 tubular roller blind motor. Its motor diameter is 25 mm; the specified driving-tube diameter is 38 mm.
Motor and tube fit
The manufacturer lists 7.4 V DC and 0.9 A rated current for the motor. These values are not charging instructions. Confirm the tube profile, drive adapter, bracket clearance and blind load before ordering; tube diameter alone does not establish a fit.
Control and package
App control requires a compatible Zigbee gateway. The RF remote is not included. Confirm the exact remote and pairing method; RF433 alone does not prove compatibility.
Obstacle detection, noise level and load capacity have not been independently confirmed for your installation. Do not assume the motor is a direct replacement for every 38 mm blind system.