Elitech RCW-400A User Manual

Elite of technology

Overview

The RCW-400A is a 4-channel temperature and humidity data logger offering wide temperature measurement ranges and high precision sensitivity. Its large LCD screen displays time, current status, memory capacity, and recorded data. Features include an embedded buzzer and relay alarm for on-site alerts, and a SIM card slot for SMS text alerts via GSM technology. Combined with 3G data transmission and the Elitech cloud platform, users can monitor real-time data online and manage saved data remotely via the Elitech App or web browsers. Standard accessories include one temperature and one humidity sensor, with options to extend to four-channel configurations (two temperature/two humidity, or four temperature sensors). The device has a built-in rechargeable lithium battery supporting continuous data uploading and SMS alerts during power outages. It is suitable for use in food, pharmaceutical, and catering industries.

Features

Monitor the status of cold storages.
Monitor and record temperature and humidity data.
SMS text alert in case of over temperature and humidity limits.
Continuously running for at least 6 hours in case of power outage.
Buzzer alarm and relay alarm functions.
Adjustable recording interval as needed.
Maximum 20,000 recording points inside the device memory.
Unlimited recording points on the cloud server.
Remote data monitoring, uploading, printing, and management via the Elitech cloud.

Specifications

Power supply	12V/2.5A (DC)
Measurement range	-40°C ~ 70°C
Temperature accuracy	±1.0°C (-25°C ~ 0°C); ±0.5°C (0°C ~ 40°C); ±2°C (other)
Resolution	0.1°C
Humidity range	10%RH ~ 90%RH
Humidity accuracy	±5%RH (@25°C, 30%RH~80%RH) - Typical situation
Temperature sensor	NTC
Humidity sensor	Honeywell
Log interval	1 minute to 24 hours settable
Memory	Maximum 20,000 readings for each channel
Operating environment	Indoor use only, no exposure to rain or sun. Temperature: -10°C ~ 45°C, relative humidity: 30% ~ 70%
Alarm output	Buzzer and relay
Communication interface	3G, SMS
Battery	3.7V, 2200mAH lithium battery

Note: If the sensor wire is longer than 50m, the accuracy deviates 1%

LCD Display

The device's LCD screen displays various information:

(1) Power charging indicator [power-charging-icon]
(2) Battery level indicator [battery-level-icon]
(3) Over limit alarm indicator: a. MAX: Over upper-limit; b. MIN: Under lower-limit
(4) Sensor channels: Displays channels 1&2, then 3&4. Specific pin assignments are detailed in the Sensors Installation section.
(5) Date and time
(6) Recording status: a. Wait: waiting for recording; b. Act: recording
(7) Recorded points count
(8) GSM network signal strength for SIM card [signal-strength-icon]
(9) Elitech Cloud platform connecting indicator [cloud-connect-icon]
(10) Humidity unit
(11) Temperature unit

Appearance

The device features an LCD screen. Key indicators and components include:

Power indicator [power-indicator-icon]
GSM antenna
GSM network indicator [gsm-indicator-icon]

Other noted elements are 'View version number' and 'Not used' areas on the device.

Operation

(1) Access the device ID

The device is identified by a unique GUID (20-digit number).

(2) SIM card installation and replacement

Insert your SIM card into the side slot. Ensure the logger is protected from heat during installation.

(3) Antenna installation

Connect the GSM antenna to the designated connector on the device.

(4) Power ON/OFF and Charging

Use the Power ON/OFF button to turn the device on or off. Connect the power adapter to the Power connector for charging.

Sensors Installation

Detailed wiring diagrams for connecting sensors to the device:

Wiring for 2 Channel Temperature Sensors

Channel 1 connects to pins 8&9. Channel 2 connects to pins 12&13.

Wiring for 4 Channel Temperature Sensors

Channel 1: Pins 8&9. Channel 2: Pins 12&13. Channel 3: Pins 14&15. Channel 4: Pins 16&17.

Wiring for 4 Channel Temperature and Humidity Sensors

Two humidity sensors connect to pins 6,7,8,9 and 10,11,12,13 respectively. Two temperature sensors connect to pins 14&15 and 16&17 respectively.

Wiring for 2 Channel Temperature and Humidity Sensors

One temperature sensor connects to pins 8&9. One humidity sensor connects to pins 10,11,12,13.

Note: Measured values will appear on screen after sensors are plugged in for 15 to 20 seconds.

Elitech App

1. Download and Login

Download the Elitech app by searching for 'Elitech' on the App Store or Google Play, or by scanning the QR code provided in the manual. Register and log in to your account.

2. Add Device

Follow these steps to add a device:

Click the '+' icon.
Scan the QR code on the back of the device.
Click 'Add' to include the device in your account.

Elitech Cloud

1. Login Cloud Portal

Access the cloud portal at www.i-elitech.com for further operations. Refer to the 'Help' section within the portal for detailed instructions.

2. Top up SIM card

Recharge your SIM card as per the instructions in the App Instruction Manual. A complimentary period may be offered.

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