Hello Amal,
Cisco AP 1850 getting low range
Below listed are some of the benefits of 1700 and 1850 access points , based on your requirement you can select either 1700 or 1850 series AP.
Benefit of 1700 series
802.11ac Wave 1 support with 3x3 multiple input and multiple output (MIMO) and two spatial streams - Delivers higher rates over a greater range for more capacity and reliability than competing access points. Provides up to three times more bandwidth than 802.11n networks.
Cisco CleanAir® Express Spectrum Intelligence - Detects RF interference and provides basic spectrum analysis capabilities while simplifying ongoing operations across 20-, 40-, and 80-MHz-wide channels
Optimized access point roaming - Directs client devices to associate with the access point in their coverage range, offering the fastest data rate available
MIMO equalization - Boosts uplink performance and reliability by reducing the impact of signal fade
Benifits of 1850 series
● 802.11ac Wave 2 with 4x4 multiple-input multiple-output (MIMO) technology with four spatial streams when operating in single-user MIMO mode and three spatial streams while operating in multiuser MIMO mode, offering 1.7-Gbps rates for more capacity and reliability than competing access points.
● Multiuser MIMO, allowing transmission of data to multiple 802.11ac Wave 2 capable clients simultaneously to improve client experience. Prior to multiuser MIMO, 802.11n and 802.11ac Wave 1 access points could transmit data to only one client at a time, typically referred to as single-user MIMO.
● Transmit beamforming technology to improve downlink performance to mobile devices, including one-, two-, and three-spatial-stream devices on 802.11ac, while improving battery life on mobile devices such as smartphones and tablets.
● Flexible deployment mode through the Cisco Mobility Express Solution is ideal for small to medium-sized deployments that require multiple access points. Easy setup allows the 1850 Series to be deployed on networks without a physical controller.