Universal Transmitter 5202A - PR

Pulse isolator 
Type: 5202A
Input: Frequency – NAMUR
Output: NPN, relay
Supply voltage: 21.6…253 VAC, 50…60 Hz or 19.2…300 VDC
Isolation voltage: 3.75 kVAC / 250 VAC
Original: PRelectronics – Denmark