Keypad 1×4 Self-Adhesive 4 key

From the shop's description

Keypad 1×4 Self-Adhesive 4 key The Keypad 1×4 Self-Adhesive 4 key is Simple numeric keypad with numbers from 1 to 4. Can be used as data input device in projects based on any microcontroller systems like Arduino or STM32 . The pinout is 1×5 female connector – raster 2.54, which allows to connect the device via gold pin strip or with use of connecting wires . On the back side there is self-adhesive tape for easy installation of the keyboard. Features : 4 tactile push-button keys in a single row (1×4 layout). Durable and flexible membrane design. Self-adhesive back for easy mounting on flat surfaces. Easy integration with microcontrollers like Arduino, Raspberry Pi, etc. Lightweight and compact form factor. Clearly labeled keys for intuitive operation. Specifications: Number of keys: 4 Key Layout: 1 Row x 4 Columns Operating voltage: 3-5VDC Operating Current: 100mA Contact Resistance: ≤ 500Ω Insulation resistance: ≥ 100MΩ Dielectric Strength: 250Vrms Interface: Digital Connector Type: Female Header Number Of Pin Connector: 5 Pins Pitch Of Pin Connector: 2.54mm Flat Cable Length: 73mm Dimensions: 69mm x 20mm Material: Flexible membrane with Self-Adhesive backing Operating Temperature Range: -40 ℃ to 85 ℃ Humidity: 40% to 80% RH (non-condensing) Key life: > 1 million presses Applications: DIY Electronics Projects. Arduino & Microcontroller Interfaces. Security Systems. Home Automation. Industrial Control Panels. Remote Controls & Robotics. Prototyping Interfaces. Package Contents: 1 X Keypad 1×4 Self-Adhesive 4 key