1. Concave design, do not waste bread board space 2. 2-way distribution can disconnect, you can choose 5V, 3.3V voltage 3. Can be powered via Mini USB and DC power supply 4. Model: LDTR-WG253/B 5. Material: PCB + electronic components 6. Dimensions: 5.5 cm x 3.5 cm x 2.5 cm 7. Weight: 8g 8. Package includes: 1 x Breadboard Power Module