Made in USA — San Luis Obispo, CaliforniaShips Same DayShips Same DayPurchase Orders Accepted1,000s of Kits in Classrooms NationwideDigital Lab Access Included

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Reusable, no-soldering electronics kits with a complete printed curriculum and free digital platform access. Every kit works with the same 9V power supply.

1,000+ classrooms equipped

6 products in the lineup

~$2 per student / year

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1634 products

Classroom Flagship Most Popular

MC1-SET Classroom Set of 32 unique REUSABLE solderless experiment kits exclusively from MR CIRCUIT.

MC1-SET · Classroom System

The complete Lab 1 curriculum
in one order.

32 unique, individually-bagged reusable experiment kits — MC1-00 through MC1-31 — with the full printed manual, free digital platform access, and everything a class needs to build real circuits from day one.

32 experiment kits 34 lesson plans included No soldering Free digital platform Reusable year after year

$164· ~$2/student/year

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Individual Labs

1633 products

15 Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 15 Ohm 5% Carbon Film Resistors - (Pack of 5)

150 Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 150 Ohm 5% Carbon Film Resistors - (Pack of 5)

150k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 150k Ohm 5% Carbon Film Resistors - (Pack of 5)

15k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 15k Ohm 5% Carbon Film Resistors - (Pack of 5)

160 Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 160 Ohm 5% Carbon Film Resistors - (Pack of 5)

18 Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 18 Ohm 5% Carbon Film Resistors - (Pack of 5)

180 Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 180 Ohm 5% Carbon Film Resistors - (Pack of 5)

180k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 180k Ohm 5% Carbon Film Resistors - (Pack of 5)

18k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 18k Ohm 5% Carbon Film Resistors - (Pack of 5)

1k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 1k Ohm 5% Carbon Film Resistors - (Pack of 5)

2 Meg Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 2 Meg Ohm 5% Carbon Film Resistors - (Pack of 5)

2.2 Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 2.2 Ohm 5% Carbon Film Resistors - (Pack of 5)

2.2k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 2.2k Ohm 5% Carbon Film Resistors - (Pack of 5)

2.7k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 2.7k Ohm 5% Carbon Film Resistors - (Pack of 5)

200 Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 200 Ohm 5% Carbon Film Resistors - (Pack of 5)

200k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 200k Ohm 5% Carbon Film Resistors - (Pack of 5)

20k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 20k Ohm 5% Carbon Film Resistors - (Pack of 5)

22 Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 22 Ohm 5% Carbon Film Resistors - (Pack of 5)

220 Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 220 Ohm 5% Carbon Film Resistors - (Pack of 5)

220k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 220k Ohm 5% Carbon Film Resistors - (Pack of 5)

22k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 22k Ohm 5% Carbon Film Resistors - (Pack of 5)

240 Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 240 Ohm 5% Carbon Film Resistors - (Pack of 5)

27 Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 27 Ohm 5% Carbon Film Resistors - (Pack of 5)

270 Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 270 Ohm 5% Carbon Film Resistors - (Pack of 5)

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