Acoustic detectors for railway crossings NKMR.468231.001 TU

Acoustic detectors for railway crossings are designed to notify people in the area of the railway crossing with an acoustic sound signal about the approach of a train, as well as use as part of traffic lights SP2 and SP3. The detectors are produced with different placement category U1 and UHL1 according to GOST 15150-69.
The detectors are fully interchangeable with currently used electric and electromechanical bells of ZPT-12, ZPT-24 types (universal in terms of supply voltage 12 V and 24 V).
Example of record when ordering:
- "Acoustic detector for railway crossings IA NKMR.468231.001 NKMR.468231.001 TU" (U1);
- "Acoustic detector for railway crossings IA NKMR.468231.001-01 NKMR.468231.001 TU" (UHL1);
- "Acoustic detector with redundancy for railway crossings IAR NKMR.468231.002 NKMR.468231.001 TU" (U1);
- "Acoustic detector with redundancy for railway crossings IAR NKMR.468231.002-01 NKMR.468231.001 TU" (UHL1)..