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TTL to 28 V DC Adapters

The following adapters have been provided to permit control of a single device, such as a pellet dispenser, from a 5 V TTL output. An internal jumper allows the user to select “active high” to turn on the device when the TTL signal transitions from 0 to 5 Vs or “active low” to turn on the device when the TTL signal transitions from 5 to 0 Vs. Units are shipped from the factory “active low” unless otherwise requested. These devices do not include the 28 V DC power supply, order separately. For small applications we recommend the power supply (SG-501).

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