4-channel transmitter with SAW resonator and modulation: OOK (On-Off Keying). Power supply: 12V miniature battery (V23A), power consumption: 10 mA (25 mA max), frequency: 433.92 MHz, channels: 4, Encoder: 145026, irradiated power (ERP): 3 mW (5 dBm ± 2 dB) Programming code: 8-pole tri-state dip switch, dimensions (mm): 75x43,51x18,5 (Aurel Code: TX-4C-5026, 650200462G). Compliant with European Standards ETS 300-220, ETS 300-683 and EN 60950. Ideal for applications where coded controls, high efficiency and low spurious emissions are required.