1、SAFE MATERIAL: The signal isolator is made of flame retardant material, with paint spraying, which can protect the circuit from environmental corrosion. 2、STABLE ISOLATION: With photoelectric isolation, anti high frequency interference, realize mutual isolation of input and output, protect power equipment. 3、HIGH EFFICIENCY: Using single chip microcomputer chip, with lower power, higher withstand voltage, PCB transformer, fast transmission response. 4、GOOD PROTECTION: The signal transmitter has good high and low temperature resistance, insulation and shockproof, not easy to moisture, safe to use. 5、SPECIFICATIONS: The DC signal isolator is designed with 2 in 4 out, the power supply is 24V, the input signal is 4‑20mA, efficient and stable in operation.