Battery Holder for 2 x 1.5V AA Cell with Cover and On-Off SwitchThis is a Black Plastic Storage Box Case for 2 x 1. 5V Battery Cell Box, with Cover and On Off Switch. This holder has a On Off switch which can be used to control power to your system. Cover provides the protection to the battery. The case box can keep your batteries organized and protected. The holder case is designed with leads for easy to solder and connect. This battery holder case is perfect for the devices need a 3V external battery. Battery

4k ohm (242) Brand Resistor Chip size 0805 Tolerance 5% Power 1/8W Temperature Range -55°C to +125°C Mounting Type Surface mount No

A package contains 2 Alligator Clips with Wires of different colours(Red and Black)

Receive sensitivity: more than -104dBm

Built-in stabilivolt

Start-up current

24V 1-Channel Relay module is able to control various appliances and other equipment with a large current

The switch may actuate a pump

The SS110 Schottky diode in the DO-214AB package makes it perfect for automated placement

Real-time execution

making it similar to their ESP8266 D1 Mini devices and other smaller Arduino boards in terms of shape

high-security isolation

It's a Black & Yellow Plastic Knob for 4mm D-Shaft Potentiometer