33 lines (27 with data), 705 Bytes

#
# Contributed by Marcin Marszalek <azzie|astronet.pl>
#
# Brand:             Hinen Electronics
# Model:             HSW0301
# Controlled device: HDMI switch 3x1
begin remote
    name	Hinen_Electronics_HSW0301
    bits	16
    flags	SPACE_ENC|CONST_LENGTH
    eps		30
    aeps	100
    frequency	38000
    duty_cycle	33
    header	9000	4500
    one		563	1687
    zero	563	562
    ptrail	563
    gap		108000
    pre_data_bits	16
    pre_data		0xFF
    begin codes
          KEY_1                    0x20DF                    #  Was: 1
          KEY_2                    0x10EF                    #  Was: 2
          KEY_3                    0x50AF                    #  Was: 3
    end codes
end remote