Based on my experiences with them, no. They seem to essentially be "water" detectors. With human bodies being mostly water, they serve as presence detectors al

Based on my experiences with them, no. They seem to essentially be "water" detectors. With human bodies being mostly water, they serve as presence detectors almost as a happy side effect. With some of the cheaper/less tuned sensors, they will detect a 5 gallon bucket of water, or a burbling water cooler as a person. You can get range estimates from a single unit, but direction is poor to non-existent. I don't see these being good for what you are describing.