Transmitter : 1. on-board single-chip ASK transmitter chip SYN115/F115 2. the module transmitting frequency: 433MHz 3. module output power: <10dBm 4. the module transmission rate: <10kbps 5. the module supply voltage: 1.8-3.6V 6. PCB size: 15*11.8(mm) Receiver: 1. on-board single-chip wireless SYN480R ASK/OOK receiver chip 2. the module receiving frequency: 433MHz 3. module receiver sensitivity:-107dBm 4. the module transfer rate: 2.5kbps(SWP), 10kbps (FIXED) 5. the module supply voltage: 3.3-5.5V 6. PCB size: 17.2*11.8(mm) Package Included : 1 X 433MHZ Transmitter Module 1X 433MHZ Receiver Module Weight: 1.1g (SYN115) 1.4g (SYN480R)