I purchased some normal phone line and "handset" couplings to extend my leak detector probes, but they are acting up after being extended. One intermittently sends a CLOSED signal now and the other two never switch to CLOSED even when submersed. The remaining leak detector probe is not extended and works perfectly fine.
Can anyone link me to the exact products they've used to successfully extend these probes? US Big Box stores or online retailer preferred. Thanks for your time.
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