1 / 5 · Click to enlarge
2 x 2 Matrix 4 Push Button Keyboard Module
The 2 x 2 Matrix 4 Push Button Keyboard Module is a value-for-money electronic switches/keypads modules designed for everyday users. It features Item Type: Keypad Module and Pin Spacing (mm): 2.54.
Available Offers
Free Delivery on this order. No minimum order value.
15-Day Easy Returns — hassle-free return & full refund.
Secure Payment — 100% safe checkout with UPI, Cards & Net Banking.
Available Offers
5% Cashback
Pay with UPI & get 5% cashback (up to ₹50) via Razorpay
No-Cost EMI
Available on select bank cards at checkout. 0% interest for 3 months.
Free Shipping
Free delivery on all orders. No minimum order value.
Cash on Delivery
COD available on orders up to ₹5,000 across India.
Quick Specs
Ideal For
About This Product
The 2 x 2 Matrix 4 Push Button Keyboard Module is a value-for-money electronic switches/keypads modules designed for everyday users. It delivers reliable performance at an accessible price.
Key Specifications
- Item Type: Keypad Module
- Pin Spacing (mm): 2.54
- Switch Type: Momentary
- Length (mm): 32
- Width (mm): 20
- Weight (g): 3
- Shipping Weight: 0.005 kg
- Shipping Dimensions: 7 × 4 × 2 cm
Why Buy from Pricio?
Pricio sources this product directly, cutting out multiple middlemen. Every order includes free shipping, a 15-day return policy, and secure payment via Razorpay.
The 2x2 matrix keypad module usually is used as input in a project. It has 4 keys in total, which means the same input values. The module is a non-encoded matrix keypad consisting of 14 keys in parallel. The keys of each row and column are connected through the pins outside – pin R1-R2 as labeled beside control the rows, when L1-L2, the columns.
It consists of microswitch buttons. The module has four holes 3mm (M3) holes for mounting. The pin designations on each PCB are shown on each PCB. Two pins are thus used as an ‘x’ coordinate and the other 2 as a ‘y’ coordinate. The module is already equipped with a soldered pin-headers (rotated 90 degrees)
How it Works:
First test whether any key is pressed down. Connect power to rows, so they are High level. Then set all the rows R1-R2 as Low and then detect the status of the columns. Any column of Low indicates there is key pressing and that the key is among the 4 keys of the column. If all columns are High, it means no key is pressed down. Next, locate the key. Since the column in which the pressed key lies is identified, knowing the line would finalize the testing. Thus, set the rows as Low in turns until any is unveiled accordingly – other rows will still be High. Now the row can be identified. Detect the status of each column in turns. The column tested Low is the one intersecting with the line – their cross point is just the key pressed.
Features:
- 2×2 matrix keypad module with 4 buttons
- Small in size and hence Save space
- More convenient to use
- Expanded development application modules for single chip
- With 4 keys and 4 pins.
Package Includes:
1 x 2*2 Matrix Keypad Module
