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The Super Smart BL-XXX/230 series signal boostes working principle is the downlink amplifies the strongest cell phone signal from cell tower which is captured by the outdoor antenna,and the uplink works to receive the cellphone signal,after amplification and transmit to the cell tower.

Before to place your order,please double check the frequency band according to the method which is mentioned in the product description pictures.if your cellphone cellular network band number does not match the signal booster band number,the product may not work for you.

If you are not sure,please feel free to contact to us.

In addition to the digital LCD on the booster, by connect the booster to the WIFI,you can also remotely monitor the working status of the booster in real time via Tuya"Smart Life"App.

*Tuya App connection is not mandatory,It is just an additional tool for monitoring the operation of the booster, and if you do not connect it, it will not affect the performance of the booster*

The models for option:

> EGSM 2G/3G/4G 900Mhz--------B8

>DCS/4G/5G 1800Mhz-------------B3

> LTE 4G 800Mhz ------------------B20

> LTE 4G/5G 700Mhz -------------B28

> GSM/3G/4G 850Mhz-------------B5

> 3G/4G/5G 2100Mhz--------------B1

If you don't know how to choose a correct model, please refer to the following information：

Selling Points:

1,For home,office,apartment,basement....etc use

2,ALC and AGC functions

3,Digital LCD display outdoor and indoor signals