Abstract: Apparatus, systems and methods for monitoring loads on a pallet, each apparatus using one or more force sensors placed under and along a single side of a loaded pallet. In embodiments, each apparatus comprises one or more low profile force sensors in one or more housings mountable on an underlying floor surface, carrying self-contained power supplies and having an associated Bluetooth transceiver. The apparatus force sensors output signals corresponding to pallet loads and load changes. Multiple apparatus may comprise a system including a base station having a Bluetooth transceiver for communicating with each the Bluetooth transceiver of each apparatus.