Wireless Metering 30A Load Switch / Controller


ZBMLCSR – Model # 4040C-xx

Remotely control and monitor your larger energy-consuming appliances and include them in intelligent energy management with a ZBMLCSR wireless load switch.  Perfectly suited for pool pump control and electric heater management, the device also lets you see load status and energy consumption.  Use with your home automation or IoT control system and set schedules and get alerts about large energy consumers before they drive up your energy bill.

This device is available in either a Normally Open (load will remain de-energized in the event of a device failure) or Normally Closed (load will stay energized) configuration.  Choose a preferred protocol among Zigbee, WiFi and LoRa.

For a dual load version, see our ZBMLC30

Smart Possibilities:

  • Turn on/ off large devices from anywhere
  • Monitor energy consumption at the appliance level
  • Let your water heater operate when electricity is at the lowest cost
  • Run your pool pump when it’s most energy efficient and least costly
  • Have large appliances respond to other events in your system


  • Remotely controls and monitors a high power (30A at 120/240VAC) load such as a pool pump or water heater
  • Measures many energy parameters including instantaneous (kW) and accumulated (kWh) energy, voltage, current and frequency
  • Available as Normally Open or Normally Closed (select option prior to adding to cart)
  • Approved for indoor or outdoor installations (NEMA 4X enclosure)
  • Choose ZigBee only, WiFi and LoRaWan for wireless connectivity
  • If in a ZigBee network, acts as a ZigBee router/ range extender providing increased network stability and coverage
  • Totally compatible and supported by the Smartenit app
  • 1 year Smartenit warranty


ZBMLCSR is a wireless, high capacity, load switch/controller that allows remote control and monitoring of large appliances and electrical loads such as water heaters, pool and booster pumps, and battery chargers.  It is available with a choice of three popular wireless protocols: ZigBee, WiFi and LoRa.

The ZigBee and WiFi versions are accessible through our mobile app that allows clear view of power consumption data, on/off control of the connected load, and include the ZBMLCSR (ZigBee version only) in automation events or schedules all from the convenience of a smart phone. As part of a larger ecosystem, loads can be switched on/off in response to energy thresholds, usage windows can be set, and loads can be made to respond to external sensor data.  Joining a ZigBee network, ZBMLCSR also acts as a router, boosting network coverage and stability.

Additional information

Weight 1 lbs
Dimensions 9 × 4 × 3 in
Choose Configuration

Zigbee Normally Open, Zigbee Normally Open with Temperature Sensor, Zigbee Normally Closed, Zigbee Normally Closed with Temperature Sensor, WiFi Normally Open, WiFi Normally Closed, LoRa Normally Open, LoRa Normally Closed


User Guides


Operating Voltage: 95-270VAC
Max. Load Current: Normally Closed – 30 Amps @ 240VAC
Normally Open – 40 Amps @ 240VAC
Operating Power: All relays energized : < 2.5 Watts.
Standby: < 0.5 Watts.
Surge Protection: MOV rated for 300V
Connections: Loose 2 x 10 gauge wires (black and red) 1 x 18 guage (white)
Switch Contactor: N.C./N.O. relay
Size: 4.5″ L x 3.5″ W x 2.25″ H
Weight: 14.5 Oz.
Mounting: Four screw holes or bracket.
Local Load Control: Yes, through push-button
Temperature: -25°-50° C (-13° – 122° F)
Humidity: 5-80 % RH Condensing
Other Specifications:
Indicators: Blue LED: Multi-Function to indicate network status, binding mode,
fault conditions.
Green LED: Indicates relay is energized.
Local Control: Multifunction push-button. Operates relay for On/Off
local control. Also used for joining network, permit joining, and binding.
ZigBee™ function: Manufacturer ID: 0x1075; router
Calibrated Metering Accuracy: Better than 0.5% 5W-7200W. Supports IEC61036/60687, and
IEC62053-22/-23. Can also be supplied with 1-2% accuracy.

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