IP212-43MK1 DIP-43MK1 self-contained smoke detectors

Autonomous detector powered by four AAA elements. Designed to detect fires accompanied by the appearance of smoke. Autonomous detectors DIP-43MK1 by design and basic technical characteristics are full analogues of DIP-43M and differ only in the presence of an additional optorelay output, whose contacts are galvanically isolated from the circuit and detector power supply elements. In IP212-43MK1 optorelay with normally closed (open) contacts is used. The number of detectors IP212-43MK1, included in one loop, is limited by the fact that the closed contacts of the optorele have a typical resistance value of 15 Ohm, so it must be taken into account when calculating the allowable resistance of the wires of loops, for example, the wires of the loop PPK-2 have an intrinsic resistance of 170 Ohm, then in such a loop can be included up to 20 detectors IP212-43MK1 ((470 Ohm - 170 Ohm) / 15 Ohm).