1、The board is made of high quality material and original imported electronic components. 2、Advanced SMT technology, beautiful appearance. 3、Rational distribution of components, input/output terminal, compact structure, easy installation. 4、Input status indication can visually display work status of each channel. 5、Convenient to mount with standard DIN rail, and the board has water-resistant paint spraying. Features: The board is made of high quality material and original imported electronic components. Advanced SMT technology, beautiful appearance. Rational distribution of components, input/output terminal, compact structure, easy installation. Input status indication can visually display work status of each channel. Convenient to mount with standard DIN rail, and the board has water-resistant paint spraying. Imported SCR has small on-resistance, long service life and can withstand 800V. Professional circuit design, with self-check, over current, short circuit (breaker), anti-interference protection circuit, safe and reliable. Specification: Input voltage: 24 V  DC Output voltage: 0~220 V AC Rated load current: 3.15 A SCR type: BT137-600E Electrical life: 50,000 hours Mechanical life: 20 million times Action/release voltage: >5 V DC/<1.5 V DC Action time/release time: <10 ms/<10 ms Installation method: Direct mount on DIN 35mm rail Size: 11.4 * 8.7 * 4.6cm / 4.5 * 3.4 * 1.8in Package list: 1 * Board