DIY USB Boost Single Turn Dual Power Supply Module Linear Regulator Multiple Output Power Kit Desktop Jewellery & Watch Multi-Functional Repair Tool with LED Lights Screen size: 56 * 45mm

Screen size: 56 * 45mm / 2

Horotec 19

5V AAA batteries) (Not included)

Humidity Measuring Range: 20%-99%RH

and AC adapter

DIY USB Boost Single Turn Dual Power Supply Module Linear Regulator Multiple Output Power Kit Desktop Jewellery & Watch Multi-Functional Repair Tool with LED Lights Screen size: 56 * 45mmThis circuit has a wide range of single power supply input(5 24V, if the output current is small, use 3. 7V lithium batteries as input can also provide normal output), then convert to multiple positive and negative regulated output converter. It's suitable for most of electronic required test. Features: Mini in size, convenient for use. Single wide range input voltage: 5 24V DC. With mini USB interface, the input with current limiting protection.