Explanation of differences between product types

FCC ID: 2ACP4-BT969

Model Numbers: BT969, BT979, BT979C, BT969C, BT979AC, BT969AC, TWS24, BT989, RV11110, BT971, BT972, BT973, BT974, BT961, BT964, 30103837, 30095696, 30098284, BT969B, BT969W, BT979W, BT979B, BT969DG, BT969FD

To Whom It May Concern:

We, The Sentry Industries Limited hereby declare that the models are identical except the model name.

Except for the different above, no other modification is performed.