Innotek Contain 'N' Train Extra Collar Receiver, SD-3000/SD-3100 Systems

Innotek SD-3125 Extra Collar Receiver is for use with the Innotek Contain 'N' Train™ systems (including SD-3000, SD-3100, CT-400A, and CKC-25W systems).

• Operates on user replaceable 3-volt Lithium batteries
• Fits neck sizes of 8" to 21"
• Water resistant

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