Answer:
The SM3-33PN operates on 433/434 MHz FSK/GFSK modulation and natively pairs with SOLT SB-series wireless call buttons (such as SB3, SB5, SB6, SB7, and SB9) and SOLT RF range repeaters (such as SR5-BPR). Note that if paired calling buttons require coin cells or batteries (they are not included).
The SM3-33PN receiver functions on the 433 MHz / 434 MHz frequency band using FSK/GFSK modulation with 360-degree omnidirectional reception aided by an external dipole antenna. It integrates seamlessly with SOLT SB-series wireless call buttons, including models SB3, SB5, SB6, SB7, and SB9. If paired wireless calling buttons require button cells or batteries (they are not included), these must be procured separately.
In large manufacturing facilities, multi-story nursing wards, or expansive hospitality spaces where concrete walls or steel structures attenuate RF signals, the receiver can be paired with SOLT RF signal repeaters (such as model SR5-BPR) to extend operational range across extended coverage areas without signal drop.
