I had meeting with engineering team.Acc. to current ceiling size, we can only use 2 type size中 411X131X137 / 大 484X131X137So, May I ask if you can adjust new sensor type to both size too(material : poly carbonate)?BTW, If other types are no problem, we’d better go on manufacturing for MGND fist mass order.Actually annion fan Qty is significantly small.