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The Quest STP20 search coil gives your Scuba Tector Pro a bigger appetite. Swapping the standard open face head for this 8 inch round waterproof coil widens every sweep and extends your reach into the bottom, so you cover more of the swim zone, the surf line, or the wreck site in the same amount of air and daylight. It is the wide scanning option in the Scuba Tector Pro system: same 95 kHz pulse induction brains, same 200 ft (60 m) capability, more ground covered per pass. More Coverage Where It Counts The Scuba Tector Pro's standard head is built for controlled, precise work in tight spaces. The STP20 answers a different question: how do you search a swimming area, a mooring field, or a stretch of beach before your dive time runs out? A 8 inch round footprint sweeps a wider path and reaches deeper into sand and silt, which is exactly what you want when the target is a lost ring somewhere in fifty square meters of bottom rather than a coin in a crevice. The swap is a one time, few minute job: open the battery compartment, loosen the electronics screw, and slide the Scuba Tector Pro's electronics module into the STP20's handle. Add the Quest Rod Extension Kit and the combination becomes a full length beach and shallow water detector with a serious coil at the end of it. What's in the Box Quest STP20 20 cm waterproof search coil with integrated handle for the Scuba Tector Pro electronics module Coil cover to protect the face from rocks and hard bottom STP20 Performance Features 8 inch (20 cm) round waterproof search coil for the Quest Scuba Tector Pro Wider sweep path and increased depth and reach compared to the standard search head Runs on the Scuba Tector Pro's 95 kHz pulse induction platform, stable in saltwater and black sand Dives wherever your Scuba Tector Pro goes, down to its 200 ft (60 m) rating Simple module swap installation with a screwdriver, no permanent modification to the detector Pairs with the Quest Rod Extension Kit for a full length beach and wading setup STP20 at a Glance Coil size: 8 inch (20 cm) round Construction: waterproof, coil cover included Technology: powered by the Scuba Tector Pro's 95 kHz pulse induction electronics Best for: wide area scanning on beaches, swim zones, and dive sites Installation: transfer the Scuba Tector Pro electronics module into the STP20 handle Works with: Quest Scuba Tector Pro (required) and the Quest Rod Extension Kit Compatibility Quest Scuba Tector Pro underwater metal detector (required, sold separately) Quest Rod Extension Kit for full length detector conversion (optional) Why Buy from Serious Detecting Serious Detecting is an authorized Quest dealer, so your STP20 is genuine and backed by Quest's support network. Pair it with the Quest Rod Extension Kit for beach duty, browse the full Quest metal detectors collection, compare submersible machines in our waterproof and underwater detectors lineup, or shop every search coil and all metal detector parts and accessories we stock. Questions about the STP20 or your Scuba Tector Pro setup? The detecting experts at Serious Detecting are here before and after your purchase.
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🇺🇸 Ship from USA · On Agora since 2025
$99.00