Dry Contact Controller

Compact Embedded Design

Tiny size allows embedded installation inside equipment or junction boxes, saving space and enabling discreet smart control.

16A High-Current Relay

Built-in 16A relay directly controls high-power loads like lights and motors—no external contactors required.

1-Channel ON/OFF Control
Single relay output for reliable switching, ideal for lighting, ventilation, security, and more.

Smart App & Remote Control

Supports Tuya / Smart Life App for easy setup, remote control, device management, and daily operation.
0–20 Min Delay-Off Control

Supports 0–20 minute delay-off control, set by app or onboard knob, ideal for spaces that need automatic shut-off.
Keeps Wired Switch Input

Retains the traditional wired switch input, combining familiar operation with smarter control.
Concealed Installation, 16A Output

Single-channel 16A design for concealed installation inside switch/socket boxes or ceilings, ideal for clean retrofit projects.

Examples Of Use Cases

ERC2304XX Compact Dry Contact Controller

Product model	RF version ERC2304 WiFi version ERC2304-W ZigBee version ERC2304-Z
Power supply	AC100V ~ 240V 50/60Hz
Inputs	1 input for existing wired switch
Max Load	SPST 16A(1 way) Resistiveload: 2200W(220V–)
Radio frequency	RF version: RF 433MHz WiFi version: WiFi 2.4G + RF 433MHz ZigBee version: ZigBee 2.4G + RF 433MHz
Operating range	Up to 80m outdoors Up to 25m indoors (May vary depending on conditions)
Operating temperature	-20℃ ~ +55℃
Memory capacity	Maximum 10 switches
Dimensions	L44W44H22mm
Certifications and standards	EN 60669-1: 2018 EN 60669-2-1:2004+A1:2009+A12:2010 EN 62479:2010 EN 50665:2017 ETSI EN 301 489-1 V2.2.3 (2019-11) ETSI EN 301 489-17 V3.2.4 (2020-09) ETSI EN 300 328 V2.2.2 (2019-07) ETSI EN 300 220-1 V3.1.1 (2017-02) ETSI EN 300 220-2 V3.2.1 (2018-06)