The SLW will provide accurate readings at a variety of locations. Since it does not require maintenance and cleaning it can be mounted at rooftop height or on a pole or fencepost; whatever is convenient. The SLW10 is lightweight and can be attached to a rain gutter with the thumbscrew provided. The SLW20 has a heavy duty metal arm ideal for location at sports facilities and other commercial sites.
Choose a location as close to the controller as possible to minimize the length of shielded cable required. The SLW will operate a maximum distance of 3000 feet from the controller as long as splices are made with a solid mechanical or solder connection and the splice is enclosed in a waterproof jacket. Weathematic provides 100 foot shielded cable splice kits that include a waterproof shrink jacket. A torch is required apply the jacket. The part number of the 100 foot cable and splice kit is the SLC100. Weathermatic shielded cable is also available in 1000 foot spools with 10 connector kits included. The part number for the 1000 foot kit is SLC1000. It is highly recommended that splices always be made above ground or in a burial box for easy access. Polarity of connections is critical. Make sure to splice BLACK to BLACK and RED to RED. The cable shield is your third connection wire.
If generic cable is used, it must be a shielded communication cable with minimum 22 gauge wires. RED and BLACK coated wires are preferred so that it is easy to maintain continuity when making splices.
General rules for SLW location are that it must be in a location where it can catch rainfall and it should be in an area with open air flow (don't locate it in a corner of two walls). It can be located in shade or sunlight. Height does not matter. Avoid any location near a heat source such as a chimney, air conditioning compressor or mounting above attic ducts where wind currents will pull the hot attic air across the SLW.