1) Frequency: 434.42Mhz/868Mhz 2) Power Supply:12/24V AC DC 3) Number of relays:2 4) Number of programmable codes:107 per relay (214 in total) 5) Code:Rolling code The Compatible for Sommer 434.4mhz and 868mhz receiver can be replaced for-original for Sommer receiver both 434mhz and 868mhz 12/24V AC DC. Option to increase radio range by antenna (more than 80 meters in open space) Operating temperature:-20-+70 Receiver Compatible With: For SOMMER 4011 For SOMMER 4025 For SOMMER 4025 BLUE For SOMMER 4031 For SOMMER 4035 For APERTO 4021 For APERTO 4025 For SOMMER 4020 TX03-868-4 For SOMMER 4026 TX03-868-2 For SOMMER 434.42MHZ green and orange LED Colour:White Material:ABS Size:(L x W x H):109 x 55 x 34 mm approximately Package Contents: 1 * receiver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.