ZMRL QL Series Network Relay Controller
The QL series provides multi-circuit remote switching over 4G. Select a model by circuit scale; use the relevant ranges for latching outputs or single-circuit energy monitoring.
View product detailsRS485 relay controller series covering 4, 6, 8, 12, 16, 24 and 32-channel output control for building lighting, campus cabinets, exhibition halls and centralized equipment switching.

Tax-inclusive reference prices in CNY. Negotiable; the quotation reflects the selected configuration, quantity and delivery requirements. All products carry a 3-year warranty.
For a complete system, include the power supply, sensors, communication access and platform deployment in your enquiry.
RS485 relay controller series covering 4, 6, 8, 12, 16, 24 and 32-channel output control for building lighting, campus cabinets, exhibition halls and centralized equipment switching.
The page is written for engineering companies, system integrators, device manufacturers and B2B project procurement teams.
Relay controller projects can be combined with DMX512 lighting control, sunrise and sunset schedules, Modbus integration, MQTT access, platform management and operation logs.
Supported models and firmware can map a remote input, sensor or business event to controller outputs at another site for one-to-one or one-to-many linkage. Applications include water towers and pumps, parking counts, warehouse alarms, irrigation and chain-store equipment.
Select QLR controllers by channels and hardware configuration. Use the chosen model’s supply, output and communications specifications before comparing other 4G or Ethernet ranges.
The QL series provides multi-circuit remote switching over 4G. Select a model by circuit scale; use the relevant ranges for latching outputs or single-circuit energy monitoring.
View product detailsSelect a Q-series configuration by circuit count, load type and site network. Compare 4G models for cellular access and the high-power range for higher-load circuit control.
View product details| Series models | ZMRL0410-QLR4, ZMRL0610-QLR6, ZMRL0810-QLR8, ZMRL1210-QLR12, ZMRL1600-QLR16, ZMRL2400-QLR24, ZMRL3210-QLR32 |
|---|---|
| Output channels | 4, 6, 8, 12, 16, 24 or 32 independent dry-contact outputs for 220V circuits |
| Input ports | QLR4/6/8/12: 4/6/8/12 local inputs respectively, plus one RS485 input; QLR16/24/32: one RS485 input |
| Relay specification | 10A 240V AC |
| Supply | 12V; standard 12V/1A supply |
| Mounting | 35mm DIN rail |
| Enclosure dimensions | QLR4: 107×110×60mm; QLR6/QLR8: 160×110×60mm; QLR12/QLR16: 200×115×60mm; QLR24: 250×110×60mm; QLR32: 300×110×60mm |
The published QLR32 port data specifies the RS485 input path. QLR4/6/8/12 have corresponding local inputs. Count field inputs separately from relay outputs.
QLR is intended for RS485 integration. Use a gateway or a controller family with 4G communication when remote cellular access is required.
Select 4G, Ethernet or RS485 by model. RS485 slaves use a networked host or gateway for platform access.
Select IO count, load characteristics, terminal space and maintenance groups using the specific model drawings.
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