The Juniper Mist BT11 is an enterprise-grade, BLE-only access point. It is specifically designed to augment existing Wi-Fi deployments with location services in a cost-effective manner. In scenarios where Wi-Fi coverage and capacity are already met by existing access points, but BLE coverage for location services is insufficient, the BT11 is the ideal low-cost device to deploy to fill those gaps without adding unnecessary and more expensive Wi-Fi hardware.

A. AP41: This is a full-featured Wi-Fi 6 access point with integrated vBLE. It is not a "BLE-only" device and is not the most cost-effective solution for this specific requirement.

C. AP32: This is a Wi-Fi 6 access point with integrated vBLE. It is designed for Wi-Fi access, not solely for augmenting BLE coverage.

D. AP43: This is a high-performance Wi-Fi 6 access point with integrated vBLE. It is an incorrect choice as it is not a low-cost, BLE-only device.

1. Juniper Mist BT11 Access Point Datasheet: "The Juniper BT11 is an enterprise-grade Access Point that is exclusively for Bluetooth® Low Energy (BLE). The BT11 is a key component of the Juniper Mist platform for indoor location services... The BT11 is designed to work in conjunction with Juniper Mist Wi-Fi Access Points to provide enterprise-grade BLE services..." (Juniper Networks, "BT11 Access Point Datasheet", Page 1, Overview section).

2. Juniper Mist AP41 Access Point Datasheet: "The Juniper Networks AP41 is a high-performance 802.11ax (Wi-Fi 6) access point that supports 4x4:4SS in 5GHz and 2.4GHz bands. The AP41 also has a dedicated 4th radio for band scanning and a dynamic vBLE 16-element antenna array..." (Juniper Networks, "AP41 Access Point Datasheet", Page 1, Product Description section).

3. Juniper Mist AP32 Access Point Datasheet: "The Juniper AP32 is a Wi-Fi 6 (802.11ax) access point (AP) that supports 2x2:2SS and dual 5GHz operation. The AP32 has a patented virtual Bluetooth® LE (vBLE) antenna array..." (Juniper Networks, "AP32 Access Point Datasheet", Page 1, Product Description section).

4. Juniper Mist AP43 Access Point Datasheet: "The Juniper AP43 is a high-performance Wi-Fi 6 (802.11ax) access point (AP) that supports 4x4:4SS and a 4th radio for spectrum monitoring. The AP43 has a patented virtual Bluetooth® LE (vBLE) antenna array..." (Juniper Networks, "AP43 Access Point Datasheet", Page 1, Product Description section).