SEL2641R433BD4 DIN-Rail Receiver Product reference: SEL2641R433BD4 Frequency: 433 Mhz 4 monostable or bistable relays (C/NO/NG). Simple programming with 1 button Activation of the relays is indicated by LEDs. 4 additional push buttons connectable 4 DIN modules wide Dimensions (L x W x D): 70 x 90 x 60 mm Coding: Keeloq Rolling Code Modulation: AM/ASK Memory: 85 push buttons Power supply: 12V AC/DC Frequency: 433 Mhz 4 monostable or bistable relays (C/NO/NG). Simple programming with 1 button Activation of the relays is indicated by LEDs. 4 additional pushbuttons connectable 4 DIN modules wide.