Sonoff RE5V1C User guide

RE5V1C Application Guide
Version 1.0
Copyright© 2018
About This Manual
This manual introduces the application guide and product parameters
of the RE5V1C, containing the following chapters.
Chapter
Title
Content
Chapter 1
Product brief
introduction
Overview of the features and
applications of RE5V1C
Chapter 2
Electrical
characteristics
Introduce the basic parameters,
PIN definitions, and wiring
methods.
Chapter 3
Radio
frequency index
Introduce the radio frequency
index of the module
Chapter 4
Function
description
Describe module functions and
specific instructions
Chapter 5
Dimensions
Provide module size diagram

1. Product Introduction
RE5V1C is a single-channel switch based on ESP8285 Wi-Fi SOC. It does
not require other peripheral circuits, and the module can work normally
after power supply. It can be connected to a Wi-Fi wireless network for
Internet or LAN communication to achieve remote control. It is designed
for mobile devices and Internet of Things applications.
Product Features:
5V DC power supply, maximum working current 250mA
Support wireless 802.11 b/g/n standard
Wi-Fi @2.4 GHz, support WPA/WPA2 security mode
+20.5dBm maximum output power in 802.11b mode
Support device button control
Support timer schedule
Support Wi-Fi remote control
APP supports Android & iOS
Main application areas: occasions where remote control switches are
required

2. Electrical Characteristics
2.1 Rated parameters
Conditions: VDD=3.3V±10% , GND=0V; test at room temperature 25°C.
Parameters
Minimum
Typical
value
Max
Unit
Voltage
4.75
5
7
V
Working current
-
80
250
mA
Load
-
-
10
A
2.2 Wi-Fi parameters
Type
Parameters
Wireless standard
IEEE 802.11b/g/n
Main chip
ESP8285
Frequency range
2.412GHz-2.484GHz
Transmit power
802.11b: 20±2dBm (@11Mbps)
802.11g: 17±2dBm (@54Mbps)
802.11n: 14±2dBm (@HT20, MCS7)
Receiving sensitivity
802.11b: -91 dBm (@11 Mbps, CCK)
802.11g: -75 dBm (@54Mbps, OFDM)
802.11n: -72 dBm (MCS7)

Antenna type
2.4GHz ceramic antenna
2.3 Interface definition
Pin
Name
Features
1
5V DC
DC power supply positive
2
GND
DC power supply negative
3
OUT
Output load
4
L
AC L end interface
Interface definition diagram:

2.4 Wiring
DC (DC5V/500mA) power supply:
Load:

3. Radio Frequency Index
Conditions: VDD=3.3V±10% , GND=0V ; test at room temperature 25°C.
Description
Minimum
Typical
value
Max
Unit
Input frequency
2412
-
2484
MHz
Output impedance
-
50
-
Ω
Solid wave loss
-
-
-10
dB
PA output peak value
power when at 72.2Mbps
15.5
16.5
17.5
dBm
PA output peak value power in
802.11b mode
19.5
20.5
21.5
dBm
Sensitivity:
Description
Minimum
Typical
value
Max
Unit mA
CCK 1Mbps
-98
dBm
CCK 11Mbps
-91
dBm
6Mbps(1/2BPSK)
-93
dBm
54Mbps (3/4 64-QAM)
-75
dBm
HT20, MCS7 (65Mbps,
72.2Mbps)
-72
dBm

Adjacent frequency suppression
Description
Minimum
Typical
value
Max
Unit mA
OFDM, 6Mbps
37
dB
OFDM, 54Mbps
21
dB
HT20, MCS0
37
dB
HT20, MCS7
20
dB
Note:
1. 72.2Mbps is measured in the 802.11n mode, the MCS =7, the GI = 200uS.
2. Up to + 21.5dBm output power in 802.11b mode.
4. Function Description
4.1. Module function
RE5V1C module can be used as a single-channel switch, which can
control the switch locally or remotely through APP.
The following is the function description:
1. Pairing method: quick pairing mode / compatible pairing mode.
Press and hold the button for more than 5s to enter the quick
pairing mode. When it is in the quick pairing mode, press
the button for more than 5s again to enter the compatible pairing
mode. APP can be configured in both modes.
2. Switch:

a) In the normal state: click the button to control the relay on and
off. The red light is on, the relay is on, otherwise the relay is off.
b) In the pairing mode: click the button to exit the pairing mode.
3. Timer: including single, count down, repeat, and loop timer.
4. Power-on status configuration: The power-on switch status can
be configured on or off through the APP, and the default power-on
status is off.
4.2. Wi-Fi status indicator light description
The flashing mode of the Wi-Fi status light (yellow & green) on
the device represents the its current network working status. The specific
status includes the following seven types:

The flashing of the Wi-Fi status light is in a cycle of 2 seconds, as shown
in the figure, the low-level light is on and the high-level light is
off. Detailed explanation of each status:
A. Normal: The device is working normally and the connection to the
cloud server is normal. The device can be only controlled through
the APP in this mode.
B. NO Wi-Fi: The device cannot connect to the router.
C. No Server: The device has been connected to the router, but it cannot
connect to the server (also known as "cannot access the Internet").
D. Unregistered: The device has not been bound to account. The device
needs to be bound to the eWeLink account to connect to the cloud

server. You can bind the device by tap “Add Device” in the eWeLink
APP.
E. Upgrade: Indicates that the device is upgrading the firmware.
F. Setting G1: Indicates that the device is in compatible pairing
mode. The device obtains the necessary information provided by the
APP to join the service network, including router SSID, password, server
IP, port number, etc in the setting mode.
G. Setting G2: Indicates that the device is in quick pairing mode. The
device obtains the necessary information provided by the APP to join
the service network, including router SSID, password, server IP, port
number, etc in the setting mode.
The device obtains information in different ways in the two modes,
read below section for details.
4.3 The Wi-Fi module basic workflow
1. Configuration
a) Compatible pairing mode: The mobile terminal joins the device
AP as a station to form a local area network to realize data
interaction. When the device is in the quick pairing mode (G state,

see details in 4.2 Wi-Fi status indicator light description), press
and hold the pairing button for 5S, the device enters the
compatible pairing mode. Click “add device” on the eWeLink APP,
connect the device hot spot in the phone setting page manually
with SSID: ITEA 10000XXXX and password12345678 to connect
the device to the Internet.
b) Quick pairing mode: The Wi-Fi module is in promiscuous mode,
and the encrypted message containing information such as SSID
and password from the mobile terminal is obtained by empty
packet capture. The device enters the quick pairing mode by
pressing the pairing button for 5S when it is in the A~D flashing
modes. Click “add device” on the eWeLink APP, enter the SSID and
password of the router to connect the device to the Internet.
2. Online
The module goes through the following process from power-on to
connecting to the server:
1. Join the configured router and connect to the Internet.
2. Connect to the server.
3. Register the device and bind it to the eWeLink account.
4. Obtain device application parameters and stay online.

When the connection/acquisition fails in the above steps, there are
corresponding back-off strategies and reconnection mechanisms to
ensure that the device is stable and keep online.
3. Upgrade
The module connects to the upgrade server, downloads and updates to
the latest version of the firmware to realizes the online upgrade of the
device.
4.4 Timer function
The timer function is configured through the APP, and the timer is
divided into the following four types:
1. Single timer: execute at a specified time.
2. Count down timer: execute after the setting time.
3. Repeat timer: repeat the operation every week.
4. Loop timer: repeat the operation every setting time.
4.5 Timer function description
RE5V1C supports timer. The eWeLink APP provides four timing modes to
facilitate the use in more scenarios.

1. Single timer: This is the most common timing setting, allowing
users to set the work schedule of the device. For example, turn on/off
the device at 8:30 am every Wednesday, etc. It is similar to the setting
of an alarm clock, timing is very convenient to use especially for
devices that are repeatedly running at certain moments.
2. Count down timer: The count down is to facilitate the user to
perform one-time timing operations, such as turn on/off the device
after 30 minutes. It is very convenient to turn off a device after
running a period of time. This device supports up to 24 hours of
count down.
3. Repeat timer: Repeat the operation every week. For example, set an
alarm clock for working time. After the time is set, select execute
dates (a week optional), and the alarm clock will turn on at the set
time within the selected days.
4. Loop timer: The loop timing released by eWeLink allows the device
to execute continuously from a certain time. For example, let the
tank's oxygen pump open once every hour from now, and close after
20 minutes of running, and then repeat the automatic cycle to
ensure sufficient oxygen of the fish tank without manual
intervention.

5. Dimensions