PONMANI wrote

1) Is it possible to set static IP in CPE 210? 

Yes.

2) Howmany WiFi devices can be connected to CPE 210, practically?

Usually CPEs are used pair-wise in PtP scenarios to create a long-range directional link. You could also use them in PtMP scenarios, but then the central AP usually is a WBS210 with a sector antenna such as TL-ANT2415MS.

CPE are not designed to serve standard clients. It makes not much sense to have a CPE with coverage in the kilometer range when all you are doing is to connect standard devices capable of covering only a few dozen meters, thus limiting the coverage of the whole WLAN.

If you need to serve standard clients, consider to use an EAP225-Outdoor instead.

@PONMANI,

the EAP225-Outdoor is an AC1200 device, max. WiFi rate (not data throughput!) is 300 Mbps for the 2.4 GHz band and 867 Mbps for the 5 GHz band. The 802.11n standard is independent of the frequency band, n-mode exists in both bands.

If you really need only 2.4 GHz, the EAP110-Outdoor might be the better choice.

Note that for the WiFi rate of 300 Mbps in the 2.4 GHz band the EAP needs to use a channel width of 40 MHz, that mean it needs to acquire 8 channels in the 2.4 GHz band simultaneously. In overcrowded areas this will cause much interferences, since all channels in the 2.4 GHz band are overlapping each other. You probably won't achieve the full WiFi rate due to interferences with other nearby APs.

EAP-Outdoor casing is IP 65 (weather-proof), operating temperature is -30º to 70º C. Please find the nifty-gritty details on the web page for those APs.