For Dual System Plastic Closet; For Triple System Metal Closet (For Example: F10I-Gdw) - Nikrans NS-2500 Installation Manual

Put ON a pair of switches for a total of 15dB reduction in gain.
(DL1 & UL1 – Alarm Low) – For 800MHz or 900 MHz Band
(DL2 & UL2 – Alarm High) – For 1700, 1800, 1900 & 2100 MHz Band

For dual system plastic closet?

Turn ON the dip switches to reduce power as follows:
Put ON a pair of switches for a total of 15dB reduction in gain.
(DL1 & UL1 – Alarm Low) – For 800MHz or 900 MHz Band
(DL2 & UL2 – Alarm High) – For 1700, 1800, 1900 & 2100 MHz Band

For triple system metal closet (For example: F10I-GDW)

Turn ON the dip switches to reduce gain as follows:
Put ON a pair of switches for a total of 15dB reduction in gain. You can reduces anyone system in the products.
Turn ON the dip switches of GSM or DCS or WCDMA to reduce the gain of GSM system.