Features Operating Current --- Standby current (all relays closed) 14MA, 1 relay open 41MA, 2 relays open 69MA, 3 relays open 96MA, 4 relays open 123MA, 5 relays open 150MA, 6 relays open 177MA, 7 relays open 203MA, 8 relays open 229MA, 16 relays open 480MA. Send Commands Via Android --- Under the command mode, this relay module can support up to 64 devices in parallel, MODBUS commands can be made serial HyperTerminal (serial assistant) or "Modbus Poll" enterSend commands via Android 5 COMMANDS --- Momentary, Self-locking, Interlock, Open, Close, 5 Commands. Meeting your different needs Maxmium Remote Distance is Up to 10 Meter --- Maxmium remote distance is up to 10 meter. Command control mode, the maximum delay is 255 seconds Note --- Only suitable for android phones with Bluetooth functions. Specifications: Bluetooth version: 2.1 Bluetooth password: 1234 Control mode: Phone bluetooth / Relay switch Control port: 16 switches with normally open and close functions Control voltage: AC 85-265V 10A / DC 1-110V 10A Operating voltage: DC 12V Remote distance: Approx. 6-10meter(Different actual circumstances has different distance) Size: Approx. 175 x 65 x 18mm / 6.88 x 2.55 x 0.7inch Quantity: 1pc Weight: 225g Note: This Bluetooth Relay is ONLY suitable for Android phones with Bluetooth functions, NOT suitable for iPhones. Please contact us for instruction. Package Included: 1 x 16 Channel Bluetooth Relay Package List