Here are the technical details for the Power Strip ZEN20:

Do not connect any other power strips or splitters to any channel on the ZEN20; the ZEN20 is intended to control a single device within the specifications per channel.The ZEN20 and all of our other smart plugs are designed to control and monitor a single device at a time per channel. Multiple inductive loads with their rapid current changes happening at once on a single channel, may damage the device or cause abnormal behavior.

• Z-Wave Signal Frequency: 908.42 MHz
• Power: 120 V
• Maximum Load: 15 A TOTAL (between 5 outlets)
• USB Charging Port Power: 5V up to 2.1 A
• Range: Up to 100 feet line of sight
• Installation and Use: Indoor Only
• Operating Temperature: 32-104° F (0-40° C)
• Dimensions: 4" x 1.4" x 1.4"
• Cord: 2.5'
• Weight: 13 oz

Questions? Just ask!