DC Input Module 3.3V with DC Jack and Switch

From the shop's description

Voltage Regulator Module -AMS1117 / 3.3V Onboard AMS1117-3.3 chip, onboard DC seat, convenient access to power. The onboard 7×7 self-locking switch is convenient for controlling the power on and off during the experiment. The on-board power indicator indicates whether the power is on. The 4-way output voltage interface is convenient for connection during the experiment. DC / DC module to easily generate a 3.3V supply voltage from a higher input voltage. With switch and operating LED. Ideal for powering microcontroller developer boards. Technical Specifications: Linear voltage regulator Voltage input range: 5~12V Output: 3.3 V / max. 0.8 A Input connection: hollow socket, 5.5 x 2.1 mm, positive pole inside Output connection: pin strip, 8-pin, RM 2.54 Output voltage accuracy: 1% Other functions: overheat cut-off, current limiting function Dimensions (LxWxH): 49x13x15 mm