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The electronic stopwatch - time parameter meter IVPR-53SCH is a panel device for monitoring and measuring the time parameters of relays, switches and switches of electrical equipment, relay protection, automation and telemechanics.

The electronic stopwatch - time parameter meter IVPR-203M is a universal small-sized device of a new type for monitoring and measuring the time parameters of relays, switches and switches of electrical equipment, relay protection, automation and telemechanics.

The electronic stopwatch - time parameter meter IVPR-203M is a universal shield device of a new type for monitoring and measuring the time parameters of relays, switches and switches of electrical equipment, relay protection, automation and telemechanics.