ITEM NAME:Input AC 220V LED Transformer Power Supply Driver For LED Bulbs Description: Plastic LED transformer for LED bulbs with 3mm-5mm diameter. The LED transformer can drive 1-36pcs of LEDs connected in a series circuit. The input of this LED transformer is 220V AC, 50 / 60Hz, with 3V output voltage for each LED bulb. Description: LED transformer for ÃŽ ¦3mm-5mm LED bulbs Applications: LED display, LED string light, LED light box, home / business / office illuminations Can drive (1-36)pcs LED bulbs in series connection Input: AC 220V, 50 / 60Hz Output Voltage: 3V for single LED bulb (total voltage=LED number x 3V) Wiring: Red cable for AC power, black cable for LED+, white cable for LED- Size (L x W x H): Approx. 2.5 x 1.25 x 0.8 inch Cable Length: Approx. 5 inch Material: Plastic Note: We have two kinds of products. There is a slight difference on the appearance . We will send it at random. Package Includes: 1x LED Transformer SKU: ALU0022062614003841.Input: AC 220V, 50 / 60Hz. Wiring: Red cable for AC power, black cable for LED+, white cable for LED-. Can drive (1-36)pcs LED bulbs in series connection. Note: We have two kinds of products. There is a slight difference on the appearance.