1.OEM factory 
2.Passed CE/ISO Cert 
3.have trade with many countries 
4.New product development ability
Single solid state relays ara AC relays,triac output.The triac version of the zero switching relay is an inexpensive solution for resisive loads,the zero switching relay swiches on when the AC sine voltage just crosses zero,and switches off when the currrent crosses zero.

Rated operational current:10A to 40Amps

Rated operational voltage:240V or 440V

4000Vrms optical isolation.(input/output)

Input voltage range 4to 16VDC,3-32VDC or 90-280VAC

Both"Zero Voltage"&phase controllable"Random Switching"versions

LED-indication for control input