Magnetic Detector
Magnetic Detector works like Bug Net, Ice Hammer etc. it's cooldown is 6 seconds and can give you from 1 up to 3 pokemons without bait.
You can use it on these objects:

Without bait you can find:
Pichu, Pikachu, Voltorb, Electrode, Mareep, Flaaffy, Elekid (low chance), Electrike, Manectric, Plusle, Minun, Blitzle, Yamper, Magnemite, Magneton, Helioptile (very low chance), Cufant, Beldum, Metang, Honedge, Doublade, Ferroseed, Pawniard, Tinkatink, Tinkatuff
Baits:
Steelix Amulet - (allows you to find stronger pokemons instead of their pre evolutions) - Raichu, Electabuzz, Ampharos, Pachirisu, Zebstrika, Electivire (lower chance), Boltund, Alolan Raichu, Magnezone (lower chance), Emolga, Dedenne, Togedemaru, Heliolisk (low chance), Copperajah (low chance), Skarmory (very low chance), Mawile, Metagross, Aegislash, Hisuian Sliggoo, Hisuian Goodra, Lucario, Ferrothorn, Bisharp, Tinkaton
Powerful Magnet - increases chance to find pokemon by 30%
Big Electrified Gem - gives a chance to find 1 additional pokemon and very low chance to find 2 additional pokemons
Medium Electrified Gem - user can find only Steel Type Pokemons
Small Electrified Gem - user can find only Electric Type Pokemons
Mega Steelix Amulet - user have a chance to find shiny pokemons :
Shiny Pachirisu, Shiny Ampharos, Shiny Yamper (smaller chance), Shiny Boltund, Shiny Dedenne, Shiny Helioptile (smaller chance), Shiny Heliolisk, Shiny Cufant (smaller chance), Shiny Copperajah, Shiny Mawile, Shiny Metagross, Shiny Aegislash, Shiny Hisuian Sliggoo, Shiny Hisuian Goodra, Shiny Lucario, Shiny Bisharp, Shiny Tinkatink (smaller chance), Shiny Tinkatuff (smaller chance), Shiny Tinkaton
Magnetic Detector Box contains:
- Magnetic Detector
- Powerful Magnet
- Big Electrified Gem
- Medium Electrified Gem
- Small Electrified Gem
- Steelix Amulet
- Mega Steelix Amulet
Other versions of that system: Lava fishing, Ice Mining, Lead Pickaxe, Bug hunting system.