This is the Autostart AS285LED-ASRF3503BK key fob.

Key Fob Description:
This is an Autostart 5 Button (LED) 2-Way Remote Control
Compatible With These Systems: 
AS-2371TW
FCC ID: 
EZSNAH3503, NAH3503
IC ID: 
1513A-NAH3503
Model Number: 
AS285LED, ASRF3503BK
Compatible Antenna Number: 
ANT-FM TW 130, TW-130, TW130
Transmitting Frequency: 
433.92 MHz
Is this a 1 Way Keyfob?: 
No
Is this a 2 Way keyfob?: 
Yes
Battery Type: 
CR2025 X 2
Keyfob Colour: 
Black
LED Colour: 
Blue

This key fob works with the following antennas: