
| Sleep pattern | Instructions | Functional description |
| Start wake-up | AT+STARTEN1 | Mode 1: wake up call, users need sleep can be controlled by AT+SLEEP command, wake up can be awakened by PWRC pin low level. |
| Start sleep | AT+STARTENO | Mode 0: the power is very low under this mode. The connection calls the permeable transmission current at 900uA, disconnects the connection current below 200uA (can set the broadcast interval current to 30uA), this mode PWRC pin wake up, such as the serial port in 10 seconds without data or will not be connected to sleep automatically again into sleep |
| Problem | Answer to the question |
| 1: how MCU disconnects the bluetooth connection in the connection state | In the connection state, the PWRC pin is pulled down, and the serial port sends AT+DISC to disconnect. |
| 2: how much is the current when the module wakes up | All mode work current is not more than 1mA |
| 3: How much data can be written to serial port once | No byte limit at 9600 baud rate |
| 4: After the serial port is configured, do you need to restart it to take effect? | It is recommended to restart the module when the parameters are set |
| 5: How to test the depth of sleep current in the test module | It is recommended to test the current of VCC and GND pins |
| Sequence | Function | Factory default parameters | Instructions |
| 1 | Serial port baud rate | 9600 | AT+BAUD4 |
| 2 | Sleep pattern | Start wake-up | AT+STARTEN0 |
| 3 | Broadcast name | JDY-21 | AT+NAMHJDY-21 |
| 4 | Broadcast interval | 200MS | AT+ADVIN1 |










Shipping | Delivery Period | For in-stock parts, orders are estimated to ship out in 3 days. Elecbee ships orders once a day at about 5pm except Sunday. Once shipped, estimated delivery time depends on the below carriers you chose. DHL Express: 3-7 business days DHLeCommerce: 12-22 business days FedEx International Priority: 3-7 business days EMS: 10-15 business days Registered Air Mail: 15-30 business days | |
| Shipping Rates | Shipping rates for your order can be found in the shopping cart. | ||
| Shipping Options | Shipping rates for your order can be found in the shopping cart. | ||
| Shipping Tracking | We will notify you by email with tracking number once order is shipped. You can track your order using the “Track My Order” feature. | ||
| Returning/Warranty | Returning | Returns are normally accepted when completed within 30 days from date of shipment, please contact customer service for a return authorization. Parts should be unused and in original packaging. Customer has to take charge for the shipping | |
| Warranty | All Elecbee purchases come with a 30-day money-back return policy, plus 1-year Elecbee warranty against any manufacturing defects. | ||
| This warranty shall not apply to any item where defects have been caused by improper customer assembly failure by customer to follow instructions, product modification, negligent or improper operation | |||
| Ordering | How to Buy | Elecbee accepts online orders. | |
| Add to cart > Check out > Submit order > Complete payment > Delivery | |||
| Payment | PayPal, Credit Card includes Visa, Master, American Express, Bank transfer. | ||